100022222220 has 48 divisors (see below), whose sum is σ = 285346424160. Its totient is φ = 26169335296.

The previous prime is 100022222173. The next prime is 100022222243. The reversal of 100022222220 is 22222220001.

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 100022222220.

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, 15723585 + ... + 15729944.

It is an arithmetic number, because the mean of its divisors is an integer number (5944717170).

Almost surely, 2^100022222220 is an apocalyptic number.

100022222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100022222220 is an abundant number, since it is smaller than the sum of its proper divisors (185324201940).

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

100022222220 is a wasteful number, since it uses less digits than its factorization.

100022222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31453594 (or 31453592 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 100022222220 its reverse (22222220001), we get a palindrome (122244442221).

The spelling of 100022222220 in words is "one hundred billion, twenty-two million, two hundred twenty-two thousand, two hundred twenty".