220101122100 has 36 divisors (see below), whose sum is σ = 636825914144. Its totient is φ = 58693632480.

The previous prime is 220101122099. The next prime is 220101122141. The reversal of 220101122100 is 1221101022.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 366834904 + ... + 366835503.

Almost surely, 2^220101122100 is an apocalyptic number.

220101122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220101122100 is an abundant number, since it is smaller than the sum of its proper divisors (416724792044).

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

220101122100 is a wasteful number, since it uses less digits than its factorization.

220101122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733670424 (or 733670417 counting only the distinct ones).

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

Adding to 220101122100 its reverse (1221101022), we get a palindrome (221322223122).

The spelling of 220101122100 in words is "two hundred twenty billion, one hundred one million, one hundred twenty-two thousand, one hundred".