202102111100 has 18 divisors (see below), whose sum is σ = 438561581304. Its totient is φ = 80840844400.

The previous prime is 202102111091. The next prime is 202102111111. The reversal of 202102111100 is 1111201202.

It is a super-2 number, since 2×202102111100² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1010510456 + ... + 1010510655.

Almost surely, 2^202102111100 is an apocalyptic number.

202102111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202102111100 is an abundant number, since it is smaller than the sum of its proper divisors (236459470204).

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

202102111100 is a wasteful number, since it uses less digits than its factorization.

202102111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021021125 (or 2021021118 counting only the distinct ones).

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

Adding to 202102111100 its reverse (1111201202), we get a palindrome (203213312302).

The spelling of 202102111100 in words is "two hundred two billion, one hundred two million, one hundred eleven thousand, one hundred".