202000002001021 has 12 divisors (see below), whose sum is σ = 235194974239680. Its totient is φ = 172984157750040.

The previous prime is 202000002001009. The next prime is 202000002001027. The reversal of 202000002001021 is 120100200000202.

It is not a de Polignac number, because 202000002001021 - 2²⁵ = 201999968446589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202000002000989 and 202000002001007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202000002001027) 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 11 ways as a sum of consecutive naturals, for example, 1889244901 + ... + 1889351818.

It is an arithmetic number, because the mean of its divisors is an integer number (19599581186640).

Almost surely, 2^{202000002001021} is an apocalyptic number.

It is an amenable number.

202000002001021 is a deficient number, since it is larger than the sum of its proper divisors (33194972238659).

202000002001021 is a wasteful number, since it uses less digits than its factorization.

202000002001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3778597824 (or 3778597817 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 202000002001021 its reverse (120100200000202), we get a palindrome (322100202001223).

The spelling of 202000002001021 in words is "two hundred two trillion, two million, one thousand, twenty-one".