22013221131 has 48 divisors (see below), whose sum is σ = 34948143360. Its totient is φ = 13241405760.

The previous prime is 22013221127. The next prime is 22013221141. The reversal of 22013221131 is 13112231022.

It is not a de Polignac number, because 22013221131 - 2² = 22013221127 is a prime.

It is a super-2 number, since 2×22013221131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22013221141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13697530 + ... + 13699136.

It is an arithmetic number, because the mean of its divisors is an integer number (728086320).

Almost surely, 2^22013221131 is an apocalyptic number.

22013221131 is a deficient number, since it is larger than the sum of its proper divisors (12934922229).

22013221131 is a wasteful number, since it uses less digits than its factorization.

22013221131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576 (or 2573 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 22013221131 its reverse (13112231022), we get a palindrome (35125452153).

The spelling of 22013221131 in words is "twenty-two billion, thirteen million, two hundred twenty-one thousand, one hundred thirty-one".