22131330131 has 4 divisors (see below), whose sum is σ = 23296137000. Its totient is φ = 20966523264.

The previous prime is 22131330103. The next prime is 22131330139. The reversal of 22131330131 is 13103313122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22131330131 is a prime.

It is a super-2 number, since 2×22131330131² (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 (22131330139) 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, 582403406 + ... + 582403443.

It is an arithmetic number, because the mean of its divisors is an integer number (5824034250).

Almost surely, 2^22131330131 is an apocalyptic number.

22131330131 is a deficient number, since it is larger than the sum of its proper divisors (1164806869).

22131330131 is a wasteful number, since it uses less digits than its factorization.

22131330131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164806868.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 22131330131 its reverse (13103313122), we get a palindrome (35234643253).

The spelling of 22131330131 in words is "twenty-two billion, one hundred thirty-one million, three hundred thirty thousand, one hundred thirty-one".