201020202131213 has 4 divisors (see below), whose sum is σ = 202351461748128. Its totient is φ = 199688942514300.

The previous prime is 201020202131137. The next prime is 201020202131219. The reversal of 201020202131213 is 312131202020102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201020202131213 - 2²⁶ = 201020135022349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020202131219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665629808231 + ... + 665629808532.

It is an arithmetic number, because the mean of its divisors is an integer number (50587865437032).

Almost surely, 2^{201020202131213} is an apocalyptic number.

It is an amenable number.

201020202131213 is a deficient number, since it is larger than the sum of its proper divisors (1331259616915).

201020202131213 is a wasteful number, since it uses less digits than its factorization.

201020202131213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331259616914.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 201020202131213 its reverse (312131202020102), we get a palindrome (513151404151315).

The spelling of 201020202131213 in words is "two hundred one trillion, twenty billion, two hundred two million, one hundred thirty-one thousand, two hundred thirteen".