100122012020 has 48 divisors (see below), whose sum is σ = 221991268800. Its totient is φ = 37826300160.

The previous prime is 100122012019. The next prime is 100122012031. The reversal of 100122012020 is 20210221001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 100122011992 and 100122012010.

It is a congruent number.

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, 272225 + ... + 523784.

It is an arithmetic number, because the mean of its divisors is an integer number (4624818100).

Almost surely, 2^100122012020 is an apocalyptic number.

100122012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100122012020 is an abundant number, since it is smaller than the sum of its proper divisors (121869256780).

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

100122012020 is a wasteful number, since it uses less digits than its factorization.

100122012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796368 (or 796366 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100122012020 its reverse (20210221001), we get a palindrome (120332233021).

The spelling of 100122012020 in words is "one hundred billion, one hundred twenty-two million, twelve thousand, twenty".