100033031220 has 48 divisors (see below), whose sum is σ = 294834200640. Its totient is φ = 25271502336.

The previous prime is 100033031191. The next prime is 100033031233. The reversal of 100033031220 is 22130330001.

It is a super-2 number, since 2×100033031220² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 100033031220.

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, 43872997 + ... + 43875276.

It is an arithmetic number, because the mean of its divisors is an integer number (6142379180).

Almost surely, 2^100033031220 is an apocalyptic number.

100033031220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100033031220 is an abundant number, since it is smaller than the sum of its proper divisors (194801169420).

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

100033031220 is a wasteful number, since it uses less digits than its factorization.

100033031220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87748304 (or 87748302 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 100033031220 its reverse (22130330001), we get a palindrome (122163361221).

The spelling of 100033031220 in words is "one hundred billion, thirty-three million, thirty-one thousand, two hundred twenty".