22012320131 has 4 divisors (see below), whose sum is σ = 22969377552. Its totient is φ = 21055262712.

The previous prime is 22012320101. The next prime is 22012320151. The reversal of 22012320131 is 13102321022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22012320131 - 2³⁰ = 20938578307 is a prime.

It is a super-2 number, since 2×22012320131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22012320101) 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, 478528676 + ... + 478528721.

It is an arithmetic number, because the mean of its divisors is an integer number (5742344388).

Almost surely, 2^22012320131 is an apocalyptic number.

22012320131 is a deficient number, since it is larger than the sum of its proper divisors (957057421).

22012320131 is an equidigital number, since it uses as much as digits as its factorization.

22012320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957057420.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 22012320131 its reverse (13102321022), we get a palindrome (35114641153).

The spelling of 22012320131 in words is "twenty-two billion, twelve million, three hundred twenty thousand, one hundred thirty-one".