100100112220 has 48 divisors (see below), whose sum is σ = 213963660288. Its totient is φ = 39331353600.

The previous prime is 100100112179. The next prime is 100100112227. The reversal of 100100112220 is 22211001001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 100100112197 and 100100112206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100100112227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61444 + ... + 451636.

It is an arithmetic number, because the mean of its divisors is an integer number (4457576256).

Almost surely, 2^100100112220 is an apocalyptic number.

100100112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100100112220 is an abundant number, since it is smaller than the sum of its proper divisors (113863548068).

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

100100112220 is a wasteful number, since it uses less digits than its factorization.

100100112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390430 (or 390428 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100100112220 its reverse (22211001001), we get a palindrome (122311113221).

The spelling of 100100112220 in words is "one hundred billion, one hundred million, one hundred twelve thousand, two hundred twenty".