202003321200021 has 12 divisors (see below), whose sum is σ = 318308263709280. Its totient is φ = 122426255272680.

The previous prime is 202003321200001. The next prime is 202003321200061. The reversal of 202003321200021 is 120002123300202.

It is not a de Polignac number, because 202003321200021 - 2⁷ = 202003321199893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202003321199967 and 202003321200003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202003321200001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1020218793841 + ... + 1020218794038.

It is an arithmetic number, because the mean of its divisors is an integer number (26525688642440).

Almost surely, 2^{202003321200021} is an apocalyptic number.

It is an amenable number.

202003321200021 is a deficient number, since it is larger than the sum of its proper divisors (116304942509259).

202003321200021 is a wasteful number, since it uses less digits than its factorization.

202003321200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040437587896 (or 2040437587893 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 202003321200021 its reverse (120002123300202), we get a palindrome (322005444500223).

The spelling of 202003321200021 in words is "two hundred two trillion, three billion, three hundred twenty-one million, two hundred thousand, twenty-one".