100112210020 has 24 divisors (see below), whose sum is σ = 215363341368. Its totient is φ = 39068179200.

The previous prime is 100112209973. The next prime is 100112210047. The reversal of 100112210020 is 20012211001.

It can be written as a sum of positive squares in 4 ways, for example, as 959017024 + 99153192996 = 30968^2 + 314886^2 .

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 = 100112209979 and 100112210006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61043211 + ... + 61044850.

It is an arithmetic number, because the mean of its divisors is an integer number (8973472557).

Almost surely, 2^100112210020 is an apocalyptic number.

100112210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100112210020 is an abundant number, since it is smaller than the sum of its proper divisors (115251131348).

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

100112210020 is a wasteful number, since it uses less digits than its factorization.

100112210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122088111 (or 122088109 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100112210020 its reverse (20012211001), we get a palindrome (120124421021).

The spelling of 100112210020 in words is "one hundred billion, one hundred twelve million, two hundred ten thousand, twenty".