20000131333021 has 16 divisors (see below), whose sum is σ = 22865135184000. Its totient is φ = 17137088918208.

The previous prime is 20000131332959. The next prime is 20000131333051. The reversal of 20000131333021 is 12033313100002.

It is not a de Polignac number, because 20000131333021 - 2³⁵ = 19965771594653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20000131333021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000131333051) 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, 352006011 + ... + 352062823.

It is an arithmetic number, because the mean of its divisors is an integer number (1429070949000).

Almost surely, 2^{20000131333021} is an apocalyptic number.

It is an amenable number.

20000131333021 is a deficient number, since it is larger than the sum of its proper divisors (2865003850979).

20000131333021 is a wasteful number, since it uses less digits than its factorization.

20000131333021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73188.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20000131333021 its reverse (12033313100002), we get a palindrome (32033444433023).

The spelling of 20000131333021 in words is "twenty trillion, one hundred thirty-one million, three hundred thirty-three thousand, twenty-one".