100000122220 has 48 divisors (see below), whose sum is σ = 212517039168. Its totient is φ = 39522297600.

The previous prime is 100000122217. The next prime is 100000122239. The reversal of 100000122220 is 22221000001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 100000122197 and 100000122206.

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, 932914 + ... + 1034566.

It is an arithmetic number, because the mean of its divisors is an integer number (4427438316).

Almost surely, 2^100000122220 is an apocalyptic number.

100000122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100000122220 is an abundant number, since it is smaller than the sum of its proper divisors (112516916948).

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

100000122220 is a wasteful number, since it uses less digits than its factorization.

100000122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102250 (or 102248 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 100000122220 its reverse (22221000001), we get a palindrome (122221122221).

The spelling of 100000122220 in words is "one hundred billion, one hundred twenty-two thousand, two hundred twenty".