22131003012 has 12 divisors (see below), whose sum is σ = 51639007056. Its totient is φ = 7377001000.

The previous prime is 22131002987. The next prime is 22131003043. The reversal of 22131003012 is 21030013122.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 22131002982 and 22131003000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 922125114 + ... + 922125137.

It is an arithmetic number, because the mean of its divisors is an integer number (4303250588).

Almost surely, 2^22131003012 is an apocalyptic number.

It is an amenable number.

22131003012 is an abundant number, since it is smaller than the sum of its proper divisors (29508004044).

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

22131003012 is a wasteful number, since it uses less digits than its factorization.

22131003012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844250258 (or 1844250256 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 22131003012 its reverse (21030013122), we get a palindrome (43161016134).

The spelling of 22131003012 in words is "twenty-two billion, one hundred thirty-one million, three thousand, twelve".