22076738590921 has 27 divisors (see below), whose sum is σ = 25818457794471. Its totient is φ = 18822246824304.

The previous prime is 22076738590913. The next prime is 22076738590939. The reversal of 22076738590921 is 12909583767022.

The square root of 22076738590921 is 4698589.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 21841742455225 + 234996135696 = 4673515^2 + 484764^2 .

It is not a de Polignac number, because 22076738590921 - 2³ = 22076738590913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22076738590921.

It is not an unprimeable number, because it can be changed into a prime (22076738596921) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6545132791 + ... + 6545136163.

It is an arithmetic number, because the mean of its divisors is an integer number (956239177573).

Almost surely, 2^{22076738590921} is an apocalyptic number.

22076738590921 is the 4698589-th square number.

22076738590921 is the 2349295-th centered octagonal number.

It is an amenable number.

22076738590921 is a deficient number, since it is larger than the sum of its proper divisors (3741719203550).

22076738590921 is an frugal number, since it uses more digits than its factorization.

22076738590921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7158 (or 3579 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 61.

The spelling of 22076738590921 in words is "twenty-two trillion, seventy-six billion, seven hundred thirty-eight million, five hundred ninety thousand, nine hundred twenty-one".