22055131252 has 36 divisors (see below), whose sum is σ = 48484841440. Its totient is φ = 8592906960.

The previous prime is 22055131249. The next prime is 22055131261. The reversal of 22055131252 is 25213155022.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 22055131252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3251502 + ... + 3258277.

Almost surely, 2^22055131252 is an apocalyptic number.

22055131252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22055131252 is an abundant number, since it is smaller than the sum of its proper divisors (26429710188).

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

22055131252 is a wasteful number, since it uses less digits than its factorization.

22055131252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6509812 (or 6509799 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 22055131252 its reverse (25213155022), we get a palindrome (47268286274).

The spelling of 22055131252 in words is "twenty-two billion, fifty-five million, one hundred thirty-one thousand, two hundred fifty-two".