211211021122111 has 8 divisors (see below), whose sum is σ = 217733209612560. Its totient is φ = 204786910654272.

The previous prime is 211211021122069. The next prime is 211211021122133. The reversal of 211211021122111 is 111221120112112.

211211021122111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211211021122111 - 2³³ = 211202431187519 is a prime.

It is a super-2 number, since 2×211211021122111² (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 (211211021122181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24519501280 + ... + 24519509893.

It is an arithmetic number, because the mean of its divisors is an integer number (27216651201570).

Almost surely, 2^{211211021122111} is an apocalyptic number.

211211021122111 is a deficient number, since it is larger than the sum of its proper divisors (6522188490449).

211211021122111 is an equidigital number, since it uses as much as digits as its factorization.

211211021122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49039011305.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 211211021122111 its reverse (111221120112112), we get a palindrome (322432141234223).

The spelling of 211211021122111 in words is "two hundred eleven trillion, two hundred eleven billion, twenty-one million, one hundred twenty-two thousand, one hundred eleven".