General fact: 6222 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 6222 is the smallest number that can not be written as the sum of 2 triangular numbers and a power of 2.
Trivia: 6222 is an uninteresting number.
Historical date: January 12th is the day in 2006 that a stampede during the Stoning of the Devil ritual on the last day at the Hajj in Mina, Saudi Arabia, kills at least 362 Muslim pilgrims.