22105012131 has 16 divisors (see below), whose sum is σ = 33085780000. Its totient is φ = 14584748544.

The previous prime is 22105012103. The next prime is 22105012183. The reversal of 22105012131 is 13121050122.

22105012131 is a `hidden beast` number, since 22 + 10 + 501 + 2 + 131 = 666.

It is not a de Polignac number, because 22105012131 - 2⁷ = 22105012003 is a prime.

It is a super-2 number, since 2×22105012131² (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 (22105022131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4217506 + ... + 4222743.

It is an arithmetic number, because the mean of its divisors is an integer number (2067861250).

Almost surely, 2^22105012131 is an apocalyptic number.

22105012131 is a deficient number, since it is larger than the sum of its proper divisors (10980767869).

22105012131 is an equidigital number, since it uses as much as digits as its factorization.

22105012131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8440355 (or 8440349 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 22105012131 its reverse (13121050122), we get a palindrome (35226062253).

The spelling of 22105012131 in words is "twenty-two billion, one hundred five million, twelve thousand, one hundred thirty-one".