22012252544 has 32 divisors (see below), whose sum is σ = 43866446400. Its totient is φ = 11002634752.

The previous prime is 22012252543. The next prime is 22012252547. The reversal of 22012252544 is 44525221022.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012252541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404354 + ... + 455550.

It is an arithmetic number, because the mean of its divisors is an integer number (1370826450).

Almost surely, 2^22012252544 is an apocalyptic number.

It is an amenable number.

22012252544 is a deficient number, since it is larger than the sum of its proper divisors (21854193856).

22012252544 is an equidigital number, since it uses as much as digits as its factorization.

22012252544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54570 (or 54558 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 22012252544 its reverse (44525221022), we get a palindrome (66537473566).

The spelling of 22012252544 in words is "twenty-two billion, twelve million, two hundred fifty-two thousand, five hundred forty-four".