Hecho general: 12686 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 12686 is an unremarkable number.
Trivia: 12686 is an unremarkable number.
Fecha histórica: September 24th is the day in 1906 that U.S. President Theodore Roosevelt proclaims Devils Tower in Wyoming as the nation's first National Monument.