22101120210021 has 16 divisors (see below), whose sum is σ = 32088740779200. Its totient is φ = 13477271125248.

The previous prime is 22101120210017. The next prime is 22101120210131. The reversal of 22101120210021 is 12001202110122.

It is not a de Polignac number, because 22101120210021 - 2² = 22101120210017 is a prime.

It is a super-2 number, since 2×22101120210021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101120211021) 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, 6685152676 + ... + 6685155981.

It is an arithmetic number, because the mean of its divisors is an integer number (2005546298700).

Almost surely, 2^{22101120210021} is an apocalyptic number.

It is an amenable number.

22101120210021 is a deficient number, since it is larger than the sum of its proper divisors (9987620569179).

22101120210021 is a wasteful number, since it uses less digits than its factorization.

22101120210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13370308708.

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

Adding to 22101120210021 its reverse (12001202110122), we get a palindrome (34102322320143).

The spelling of 22101120210021 in words is "twenty-two trillion, one hundred one billion, one hundred twenty million, two hundred ten thousand, twenty-one".