202013101202021 has 4 divisors (see below), whose sum is σ = 205028222115552. Its totient is φ = 198997980288492.

The previous prime is 202013101202009. The next prime is 202013101202039. The reversal of 202013101202021 is 120202101310202.

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 202013101202021 - 2³⁴ = 201995921332837 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 (202013101208021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1507560456665 + ... + 1507560456798.

It is an arithmetic number, because the mean of its divisors is an integer number (51257055528888).

Almost surely, 2^{202013101202021} is an apocalyptic number.

It is an amenable number.

202013101202021 is a deficient number, since it is larger than the sum of its proper divisors (3015120913531).

202013101202021 is an equidigital number, since it uses as much as digits as its factorization.

202013101202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3015120913530.

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

Adding to 202013101202021 its reverse (120202101310202), we get a palindrome (322215202512223).

The spelling of 202013101202021 in words is "two hundred two trillion, thirteen billion, one hundred one million, two hundred two thousand, twenty-one".