general_fact: 20911 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 20911 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 20911 is an unremarkable number.
historical_date: April 1st is the day in 1999 that Nunavut is established as a Canadian territory carved out of the eastern part of the Northwest Territories.