22001231052 has 36 divisors (see below), whose sum is σ = 55621454616. Its totient is φ = 7332790080.

The previous prime is 22001231041. The next prime is 22001231111. The reversal of 22001231052 is 25013210022.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 275152 + ... + 345992.

It is an arithmetic number, because the mean of its divisors is an integer number (1545040406).

Almost surely, 2^22001231052 is an apocalyptic number.

It is an amenable number.

22001231052 is an abundant number, since it is smaller than the sum of its proper divisors (33620223564).

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

22001231052 is a wasteful number, since it uses less digits than its factorization.

22001231052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79478 (or 79473 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 22001231052 its reverse (25013210022), we get a palindrome (47014441074).

The spelling of 22001231052 in words is "twenty-two billion, one million, two hundred thirty-one thousand, fifty-two".