202102230032021 has 48 divisors (see below), whose sum is σ = 223088349923712. Its totient is φ = 182951593587840.

The previous prime is 202102230032009. The next prime is 202102230032023. The reversal of 202102230032021 is 120230032201202.

It is a happy number.

It is not a de Polignac number, because 202102230032021 - 2¹⁸ = 202102229769877 is a prime.

It is a super-2 number, since 2×202102230032021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202102230031984 and 202102230032002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202102230032023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82930745615 + ... + 82930748051.

It is an arithmetic number, because the mean of its divisors is an integer number (4647673956744).

Almost surely, 2^{202102230032021} is an apocalyptic number.

It is an amenable number.

202102230032021 is a deficient number, since it is larger than the sum of its proper divisors (20986119891691).

202102230032021 is a wasteful number, since it uses less digits than its factorization.

202102230032021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5402 (or 5391 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 202102230032021 its reverse (120230032201202), we get a palindrome (322332262233223).

The spelling of 202102230032021 in words is "two hundred two trillion, one hundred two billion, two hundred thirty million, thirty-two thousand, twenty-one".