100021012122 has 64 divisors (see below), whose sum is σ = 213884559360. Its totient is φ = 31113028800.

The previous prime is 100021012087. The next prime is 100021012183. The reversal of 100021012122 is 221210120001.

It is a junction number, because it is equal to n+sod(n) for n = 100021012098 and 100021012107.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4427997 + ... + 4450527.

It is an arithmetic number, because the mean of its divisors is an integer number (3341946240).

Almost surely, 2^100021012122 is an apocalyptic number.

100021012122 is an abundant number, since it is smaller than the sum of its proper divisors (113863547238).

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

100021012122 is a wasteful number, since it uses less digits than its factorization.

100021012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23419.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 100021012122 its reverse (221210120001), we get a palindrome (321231132123).

The spelling of 100021012122 in words is "one hundred billion, twenty-one million, twelve thousand, one hundred twenty-two".