Was Ishan Kishan's double-hundred against Bangladesh the fastest in ODIs?
And which team has played the most international matches in a single calendar year?
You're right that India played a grand total of 71 international matches in 2022 - seven Tests, 24 one-day internationals and a record 40 T20Is. That is indeed the most by any team in a calendar year: Australia played 61 internationals in 2009, Sri Lanka 57 in 2017, and India 55 in 2007. England played 54 in 2022, which is their most.
That innings of 100 not out from 83 balls by Mehidy Hasan Miraz proved just enough for Bangladesh, who beat India by five runs in Mirpur last December; it gave them a 2-0 winning lead in the one-day series.
It's true that Don Bradman is usually the answer to this sort of question, but actually his best run was six centuries in nine innings, which he did twice during his remarkable career (between 1930-31 and 1931-32, and again between 1936-37 and 1938). The man with an even purpler patch was Pakistan's Mohammad Yousuf: in eight successive innings during 2006, he scored 192 and 8 against England at Headingley, 128 at The Oval, and then 192 in Lahore, 56 and 191 in Multan, and 102 and 124 in Karachi against West Indies.
In the course of his 210 in Chattogram last December, Ishan Kishan reached his double-century in just 126 balls. The previous fastest in men's ODIs was 138, by Chris Gayle for West Indies against Zimbabwe in Canberra during the 2015 World Cup.
This one goes back a long way: in the second innings of an Ashes Test in Melbourne in 1901-02, Reggie Duff put on 120 with his fellow debutant Warwick Armstrong. It's a slightly artificial record, as both of them usually went in much higher than Nos 10 and 11: Duff regularly opened, and Armstrong eventually made six Test centuries, most often batting at No. 7. But on a tricky MCG pitch, Australia's captain Joe Darling changed the batting order - Victor Trumper went in at No. 8 - and it paid off, as they recovered from 48 for 5 to reach 353, and went on to win by 229 runs. The Sydney Morning Herald said Duff "did not give a chance or make a miss hit. His performance will be reported amongst the extraordinary events in the history of matches between England and Australia."
Steven Lynch is the editor of the updated edition of Wisden on the Ashes