20002100032131 has 32 divisors (see below), whose sum is σ = 30506208960000. Its totient is φ = 11419716013056.

The previous prime is 20002100032099. The next prime is 20002100032139. The reversal of 20002100032131 is 13123000120002.

It is not a de Polignac number, because 20002100032131 - 2⁵ = 20002100032099 is a prime.

It is a super-2 number, since 2×20002100032131² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20002100032131.

It is not an unprimeable number, because it can be changed into a prime (20002100032139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 471759825 + ... + 471802221.

It is an arithmetic number, because the mean of its divisors is an integer number (953319030000).

Almost surely, 2^{20002100032131} is an apocalyptic number.

20002100032131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20002100032131 is a deficient number, since it is larger than the sum of its proper divisors (10504108927869).

20002100032131 is a wasteful number, since it uses less digits than its factorization.

20002100032131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61643.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20002100032131 its reverse (13123000120002), we get a palindrome (33125100152133).

The spelling of 20002100032131 in words is "twenty trillion, two billion, one hundred million, thirty-two thousand, one hundred thirty-one".