100221911220 has 48 divisors (see below), whose sum is σ = 280727334720. Its totient is φ = 26715749376.

The previous prime is 100221911099. The next prime is 100221911239. The reversal of 100221911220 is 22119122001.

100221911220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154557 + ... + 473636.

It is an arithmetic number, because the mean of its divisors is an integer number (5848486140).

Almost surely, 2^100221911220 is an apocalyptic number.

100221911220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100221911220 is an abundant number, since it is smaller than the sum of its proper divisors (180505423500).

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

100221911220 is a wasteful number, since it uses less digits than its factorization.

100221911220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630864 (or 630862 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 100221911220 in words is "one hundred billion, two hundred twenty-one million, nine hundred eleven thousand, two hundred twenty".