22031120211021 has 16 divisors (see below), whose sum is σ = 32639470684800. Its totient is φ = 14687065139904.

The previous prime is 22031120210987. The next prime is 22031120211073. The reversal of 22031120211021 is 12011202113022.

22031120211021 is a `hidden beast` number, since 2 + 20 + 311 + 202 + 110 + 21 = 666.

It is not a de Polignac number, because 22031120211021 - 2¹¹ = 22031120208973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22031120210985 and 22031120211003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22031120311021) 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, 8513881 + ... + 10795758.

It is an arithmetic number, because the mean of its divisors is an integer number (2039966917800).

Almost surely, 2^{22031120211021} is an apocalyptic number.

It is an amenable number.

22031120211021 is a deficient number, since it is larger than the sum of its proper divisors (10608350473779).

22031120211021 is a wasteful number, since it uses less digits than its factorization.

22031120211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19351905 (or 19351899 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 22031120211021 its reverse (12011202113022), we get a palindrome (34042322324043).

The spelling of 22031120211021 in words is "twenty-two trillion, thirty-one billion, one hundred twenty million, two hundred eleven thousand, twenty-one".