220122111131 has 24 divisors (see below), whose sum is σ = 243587171520. Its totient is φ = 198736851456.

The previous prime is 220122111127. The next prime is 220122111151. The reversal of 220122111131 is 131111221022.

It is a happy number.

It is not a de Polignac number, because 220122111131 - 2² = 220122111127 is a prime.

It is a super-2 number, since 2×220122111131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220122111151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13439315 + ... + 13455683.

It is an arithmetic number, because the mean of its divisors is an integer number (10149465480).

Almost surely, 2^220122111131 is an apocalyptic number.

220122111131 is a deficient number, since it is larger than the sum of its proper divisors (23465060389).

220122111131 is a wasteful number, since it uses less digits than its factorization.

220122111131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18135 (or 18122 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 220122111131 its reverse (131111221022), we get a palindrome (351233332153).

The spelling of 220122111131 in words is "two hundred twenty billion, one hundred twenty-two million, one hundred eleven thousand, one hundred thirty-one".