100021112009 has 16 divisors (see below), whose sum is σ = 124042638720. Its totient is φ = 78533470080.

The previous prime is 100021112003. The next prime is 100021112033. The reversal of 100021112009 is 900211120001.

It is not a de Polignac number, because 100021112009 - 2²⁰ = 100020063433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100021112003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4183244 + ... + 4207085.

It is an arithmetic number, because the mean of its divisors is an integer number (7752664920).

Almost surely, 2^100021112009 is an apocalyptic number.

It is an amenable number.

100021112009 is a deficient number, since it is larger than the sum of its proper divisors (24021526711).

100021112009 is a wasteful number, since it uses less digits than its factorization.

100021112009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8390480.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 100021112009 in words is "one hundred billion, twenty-one million, one hundred twelve thousand, nine".