Fait général: 9211 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 9211 is an unremarkable number.
Culture générale: 9211 is a boring number.
Date historique: March 20th is the day in 1951 that Fujiyoshida, a city located in Yamanashi Prefecture, Japan, in the center of the Japanese main island of Honshū is founded.