20012412131 has 4 divisors (see below), whose sum is σ = 21065697000. Its totient is φ = 18959127264.

The previous prime is 20012412113. The next prime is 20012412139. The reversal of 20012412131 is 13121421002.

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 20012412131 - 2⁶ = 20012412067 is a prime.

It is a super-2 number, since 2×20012412131² (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 (20012412139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526642406 + ... + 526642443.

It is an arithmetic number, because the mean of its divisors is an integer number (5266424250).

Almost surely, 2^20012412131 is an apocalyptic number.

20012412131 is a deficient number, since it is larger than the sum of its proper divisors (1053284869).

20012412131 is a wasteful number, since it uses less digits than its factorization.

20012412131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053284868.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20012412131 its reverse (13121421002), we get a palindrome (33133833133).

The spelling of 20012412131 in words is "twenty billion, twelve million, four hundred twelve thousand, one hundred thirty-one".