100021010220 has 48 divisors (see below), whose sum is σ = 311176477920. Its totient is φ = 26672269248.

The previous prime is 100021010209. The next prime is 100021010249. The reversal of 100021010220 is 22010120001.

It is a Harshad number since it is a multiple of its sum of digits (9).

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 15 ways as a sum of consecutive naturals, for example, 92611507 + ... + 92612586.

It is an arithmetic number, because the mean of its divisors is an integer number (6482843290).

Almost surely, 2^100021010220 is an apocalyptic number.

100021010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100021010220 is an abundant number, since it is smaller than the sum of its proper divisors (211155467700).

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

100021010220 is a wasteful number, since it uses less digits than its factorization.

100021010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185224111 (or 185224103 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 100021010220 its reverse (22010120001), we get a palindrome (122031130221).

The spelling of 100021010220 in words is "one hundred billion, twenty-one million, ten thousand, two hundred twenty".