20112200131 has 4 divisors (see below), whose sum is σ = 21170737000. Its totient is φ = 19053663264.

The previous prime is 20112200083. The next prime is 20112200159. The reversal of 20112200131 is 13100221102.

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 20112200131 - 2²¹ = 20110102979 is a prime.

It is a super-2 number, since 2×20112200131² (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 (20112203131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529268406 + ... + 529268443.

It is an arithmetic number, because the mean of its divisors is an integer number (5292684250).

Almost surely, 2^20112200131 is an apocalyptic number.

20112200131 is a deficient number, since it is larger than the sum of its proper divisors (1058536869).

20112200131 is a wasteful number, since it uses less digits than its factorization.

20112200131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058536868.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20112200131 its reverse (13100221102), we get a palindrome (33212421233).

The spelling of 20112200131 in words is "twenty billion, one hundred twelve million, two hundred thousand, one hundred thirty-one".