Fait général: 22917 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 22917 is a boring number.
Culture générale: 22917 is an uninteresting number.
Date historique: September 28th is the day in 1912 that the Ulster Covenant is signed by half a million Ultonians in opposition to the Third Irish Home Rule Bill.