202102111100210 has 8 divisors (see below), whose sum is σ = 363783799980396. Its totient is φ = 80840844440080.

The previous prime is 202102111100161. The next prime is 202102111100249. The reversal of 202102111100210 is 12001111201202.

It can be written as a sum of positive squares in 2 ways, for example, as 174661307970601 + 27440803129609 = 13215949^2 + 5238397^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×202102111100210² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10105105555001 + ... + 10105105555020.

Almost surely, 2^{202102111100210} is an apocalyptic number.

202102111100210 is a deficient number, since it is larger than the sum of its proper divisors (161681688880186).

202102111100210 is a wasteful number, since it uses less digits than its factorization.

202102111100210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20210211110028.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 202102111100210 its reverse (12001111201202), we get a palindrome (214103222301412).

The spelling of 202102111100210 in words is "two hundred two trillion, one hundred two billion, one hundred eleven million, one hundred thousand, two hundred ten".