202110221100 has 72 divisors (see below), whose sum is σ = 598371632320. Its totient is φ = 52642658880.

The previous prime is 202110221099. The next prime is 202110221111. The reversal of 202110221100 is 1122011202.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7820830 + ... + 7846629.

Almost surely, 2^202110221100 is an apocalyptic number.

202110221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202110221100 is an abundant number, since it is smaller than the sum of its proper divisors (396261411220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202110221100 is a wasteful number, since it uses less digits than its factorization.

202110221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15667519 (or 15667512 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 202110221100 its reverse (1122011202), we get a palindrome (203232232302).

The spelling of 202110221100 in words is "two hundred two billion, one hundred ten million, two hundred twenty-one thousand, one hundred".