211211309741711 has 4 divisors (see below), whose sum is σ = 216919723518552. Its totient is φ = 205502895964872.

The previous prime is 211211309741699. The next prime is 211211309741737. The reversal of 211211309741711 is 117147903112112.

It is a happy number.

211211309741711 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211211309741711 - 2¹⁸ = 211211309479567 is a prime.

It is a super-2 number, since 2×211211309741711² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211211309743711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2854206888365 + ... + 2854206888438.

It is an arithmetic number, because the mean of its divisors is an integer number (54229930879638).

Almost surely, 2^{211211309741711} is an apocalyptic number.

211211309741711 is a deficient number, since it is larger than the sum of its proper divisors (5708413776841).

211211309741711 is an equidigital number, since it uses as much as digits as its factorization.

211211309741711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5708413776840.

The product of its (nonzero) digits is 21168, while the sum is 41.

The spelling of 211211309741711 in words is "two hundred eleven trillion, two hundred eleven billion, three hundred nine million, seven hundred forty-one thousand, seven hundred eleven".