Fatto matematico: 20771 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 20771 is an unremarkable number.
Data storica: November 12th is the day in 1958 that a team of rock climbers led by Warren Harding completes the first ascent of The Nose on El Capitan in Yosemite Valley.