22013212452 has 48 divisors (see below), whose sum is σ = 64038438912. Its totient is φ = 5717717280.

The previous prime is 22013212373. The next prime is 22013212453. The reversal of 22013212452 is 25421231022.

It is not an unprimeable number, because it can be changed into a prime (22013212453) 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, 11910988 + ... + 11912835.

It is an arithmetic number, because the mean of its divisors is an integer number (1334134144).

Almost surely, 2^22013212452 is an apocalyptic number.

22013212452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22013212452 is an abundant number, since it is smaller than the sum of its proper divisors (42025226460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22013212452 is a wasteful number, since it uses less digits than its factorization.

22013212452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23823848 (or 23823846 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 22013212452 its reverse (25421231022), we get a palindrome (47434443474).

The spelling of 22013212452 in words is "twenty-two billion, thirteen million, two hundred twelve thousand, four hundred fifty-two".