202002122010021 has 16 divisors (see below), whose sum is σ = 269826566595264. Its totient is φ = 134422920244224.

The previous prime is 202002122009993. The next prime is 202002122010043. The reversal of 202002122010021 is 120010221200202.

It is not a de Polignac number, because 202002122010021 - 2¹⁰ = 202002122008997 is a prime.

It is a super-4 number, since 4×202002122010021⁴ (a number of 58 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202002122010421) 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, 14695726 + ... + 24899168.

It is an arithmetic number, because the mean of its divisors is an integer number (16864160412204).

Almost surely, 2^{202002122010021} is an apocalyptic number.

It is an amenable number.

202002122010021 is a deficient number, since it is larger than the sum of its proper divisors (67824444585243).

202002122010021 is a wasteful number, since it uses less digits than its factorization.

202002122010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10215460.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202002122010021 its reverse (120010221200202), we get a palindrome (322012343210223).

The spelling of 202002122010021 in words is "two hundred two trillion, two billion, one hundred twenty-two million, ten thousand, twenty-one".