Fatto generale: 21198 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 21198 is an unremarkable number.
Trivia: 21198 is an uninteresting number.
Data storica: January 13th is the day in 1990 that Douglas Wilder becomes the first elected African American governor as he takes office in Richmond, Virginia.