202110102100221 has 96 divisors (see below), whose sum is σ = 322044511219200. Its totient is φ = 112377610122624.

The previous prime is 202110102100183. The next prime is 202110102100271. The reversal of 202110102100221 is 122001201011202.

It is not a de Polignac number, because 202110102100221 - 2¹⁵ = 202110102067453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202110102100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202110102100271) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5639686915 + ... + 5639722751.

It is an arithmetic number, because the mean of its divisors is an integer number (3354630325200).

Almost surely, 2^{202110102100221} is an apocalyptic number.

202110102100221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202110102100221 is a deficient number, since it is larger than the sum of its proper divisors (119934409118979).

202110102100221 is a wasteful number, since it uses less digits than its factorization.

202110102100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42903 (or 42896 counting only the distinct ones).

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

Adding to 202110102100221 its reverse (122001201011202), we get a palindrome (324111303111423).

The spelling of 202110102100221 in words is "two hundred two trillion, one hundred ten billion, one hundred two million, one hundred thousand, two hundred twenty-one".