22112102211021 has 6 divisors (see below), whose sum is σ = 31939703193710. Its totient is φ = 14741401474008.

The previous prime is 22112102211019. The next prime is 22112102211029. The reversal of 22112102211021 is 12011220121122.

22112102211021 is a `hidden beast` number, since 2 + 211 + 210 + 221 + 1 + 0 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 22011682938921 + 100419272100 = 4691661^2 + 316890^2 .

It is not a de Polignac number, because 22112102211021 - 2¹ = 22112102211019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22112102210985 and 22112102211003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112102211029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1228450122826 + ... + 1228450122843.

Almost surely, 2^{22112102211021} is an apocalyptic number.

It is an amenable number.

22112102211021 is a deficient number, since it is larger than the sum of its proper divisors (9827600982689).

22112102211021 is a wasteful number, since it uses less digits than its factorization.

22112102211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456900245675 (or 2456900245672 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22112102211021 its reverse (12011220121122), we get a palindrome (34123322332143).

The spelling of 22112102211021 in words is "twenty-two trillion, one hundred twelve billion, one hundred two million, two hundred eleven thousand, twenty-one".