210302321021 has 24 divisors (see below), whose sum is σ = 232625003520. Its totient is φ = 188978006304.

The previous prime is 210302320961. The next prime is 210302321051. The reversal of 210302321021 is 120123203012.

It is a de Polignac number, because none of the positive numbers 2^k-210302321021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210302321051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4638500 + ... + 4683618.

It is an arithmetic number, because the mean of its divisors is an integer number (9692708480).

Almost surely, 2^210302321021 is an apocalyptic number.

It is an amenable number.

210302321021 is a deficient number, since it is larger than the sum of its proper divisors (22322682499).

210302321021 is a wasteful number, since it uses less digits than its factorization.

210302321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45353 (or 45294 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 210302321021 its reverse (120123203012), we get a palindrome (330425524033).

The spelling of 210302321021 in words is "two hundred ten billion, three hundred two million, three hundred twenty-one thousand, twenty-one".