202021331213 has 16 divisors (see below), whose sum is σ = 218116852800. Its totient is φ = 186005756160.

The previous prime is 202021331191. The next prime is 202021331249. The reversal of 202021331213 is 312133120202.

It is a cyclic number.

It is not a de Polignac number, because 202021331213 - 2²⁰ = 202020282637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202021330213) 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 15 ways as a sum of consecutive naturals, for example, 8632418 + ... + 8655788.

It is an arithmetic number, because the mean of its divisors is an integer number (13632303300).

Almost surely, 2^202021331213 is an apocalyptic number.

It is an amenable number.

202021331213 is a deficient number, since it is larger than the sum of its proper divisors (16095521587).

202021331213 is a wasteful number, since it uses less digits than its factorization.

202021331213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25052.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 202021331213 its reverse (312133120202), we get a palindrome (514154451415).

The spelling of 202021331213 in words is "two hundred two billion, twenty-one million, three hundred thirty-one thousand, two hundred thirteen".