210102210102021 has 12 divisors (see below), whose sum is σ = 297584214540192. Its totient is φ = 131828837710528.

The previous prime is 210102210102017. The next prime is 210102210102041. The reversal of 210102210102021 is 120201012201012.

210102210102021 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 210102210102021 - 2² = 210102210102017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210102210102041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121166210265 + ... + 121166211998.

It is an arithmetic number, because the mean of its divisors is an integer number (24798684545016).

Almost surely, 2^{210102210102021} is an apocalyptic number.

It is an amenable number.

210102210102021 is a deficient number, since it is larger than the sum of its proper divisors (87482004438171).

210102210102021 is a wasteful number, since it uses less digits than its factorization.

210102210102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242332422300 (or 242332422283 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210102210102021 its reverse (120201012201012), we get a palindrome (330303222303033).

The spelling of 210102210102021 in words is "two hundred ten trillion, one hundred two billion, two hundred ten million, one hundred two thousand, twenty-one".