211 (two hundred [and] eleven) is the natural number following 210 and preceding 212. It is also a prime number.
In mathematics 211 is the sum of three consecutive primes (), a Chen prime, a centered decagonal prime, and a self prime. 211 is the smallest prime separated by 12 from the nearest primes (199 and 223). It is thus a balanced prime and an isolated prime. 211 is a repdigit in tetradecimal (111). 211 is the 47th prime number and therefore it is a super-prime. 211 is the fourth Euclid number, being .
References
ca:Nombre 210#Nombres del 211 al 219