22522131536021 has 12 divisors (see below), whose sum is σ = 24388291327428. Its totient is φ = 20789300922624.

The previous prime is 22522131536011. The next prime is 22522131536027. The reversal of 22522131536021 is 12063513122522.

It can be written as a sum of positive squares in 6 ways, for example, as 415588996 + 22521715947025 = 20386^2 + 4745705^2 .

It is not a de Polignac number, because 22522131536021 - 2⁴² = 18124085024917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22522131536027) 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, 8926781 + ... + 11168333.

It is an arithmetic number, because the mean of its divisors is an integer number (2032357610619).

Almost surely, 2^{22522131536021} is an apocalyptic number.

It is an amenable number.

22522131536021 is a deficient number, since it is larger than the sum of its proper divisors (1866159791407).

22522131536021 is a wasteful number, since it uses less digits than its factorization.

22522131536021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301032 (or 2301019 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 22522131536021 its reverse (12063513122522), we get a palindrome (34585644658543).

The spelling of 22522131536021 in words is "twenty-two trillion, five hundred twenty-two billion, one hundred thirty-one million, five hundred thirty-six thousand, twenty-one".