211022211021 has 12 divisors (see below), whose sum is σ = 296950924512. Its totient is φ = 133277185224.

The previous prime is 211022210969. The next prime is 211022211041. The reversal of 211022211021 is 120112220112.

It is not a de Polignac number, because 211022211021 - 2²⁶ = 210955102157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211022211041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97423761 + ... + 97425926.

It is an arithmetic number, because the mean of its divisors is an integer number (24745910376).

Almost surely, 2^211022211021 is an apocalyptic number.

It is an amenable number.

211022211021 is a deficient number, since it is larger than the sum of its proper divisors (85928713491).

211022211021 is a wasteful number, since it uses less digits than its factorization.

211022211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194849728 (or 194849709 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211022211021 its reverse (120112220112), we get a palindrome (331134431133).

Subtracting from 211022211021 its reverse (120112220112), we obtain a palindrome (90909990909).

The spelling of 211022211021 in words is "two hundred eleven billion, twenty-two million, two hundred eleven thousand, twenty-one".