100021222200 has 96 divisors (see below), whose sum is σ = 312119487360. Its totient is φ = 26495664000.

The previous prime is 100021222177. The next prime is 100021222211. The reversal of 100021222200 is 2222120001.

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 23 ways as a sum of consecutive naturals, for example, 461394 + ... + 642593.

It is an arithmetic number, because the mean of its divisors is an integer number (3251244660).

Almost surely, 2^100021222200 is an apocalyptic number.

100021222200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100021222200 is an abundant number, since it is smaller than the sum of its proper divisors (212098265160).

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

100021222200 is a wasteful number, since it uses less digits than its factorization.

100021222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104157 (or 1104148 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 100021222200 its reverse (2222120001), we get a palindrome (102243342201).

The spelling of 100021222200 in words is "one hundred billion, twenty-one million, two hundred twenty-two thousand, two hundred".