210221011100 has 18 divisors (see below), whose sum is σ = 456179594304. Its totient is φ = 84088404400.

The previous prime is 210221011051. The next prime is 210221011111. The reversal of 210221011100 is 1110122012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1051104956 + ... + 1051105155.

Almost surely, 2^210221011100 is an apocalyptic number.

210221011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210221011100 is an abundant number, since it is smaller than the sum of its proper divisors (245958583204).

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

210221011100 is a wasteful number, since it uses less digits than its factorization.

210221011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102210125 (or 2102210118 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 210221011100 its reverse (1110122012), we get a palindrome (211331133112).

The spelling of 210221011100 in words is "two hundred ten billion, two hundred twenty-one million, eleven thousand, one hundred".