211211021122211 has 16 divisors (see below), whose sum is σ = 233039524180320. Its totient is φ = 189821149774080.

The previous prime is 211211021122181. The next prime is 211211021122247. The reversal of 211211021122211 is 112221120112112.

It is a happy number.

It is not a de Polignac number, because 211211021122211 - 2³⁸ = 210936143215267 is a prime.

It is a super-2 number, since 2×211211021122211² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211211021122261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11958056 + ... + 23778501.

It is an arithmetic number, because the mean of its divisors is an integer number (14564970261270).

Almost surely, 2^{211211021122211} is an apocalyptic number.

211211021122211 is a deficient number, since it is larger than the sum of its proper divisors (21828503058109).

211211021122211 is a wasteful number, since it uses less digits than its factorization.

211211021122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35742694.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 211211021122211 its reverse (112221120112112), we get a palindrome (323432141234323).

The spelling of 211211021122211 in words is "two hundred eleven trillion, two hundred eleven billion, twenty-one million, one hundred twenty-two thousand, two hundred eleven".