100909970021 has 8 divisors (see below), whose sum is σ = 118138501824. Its totient is φ = 84384643680.

The previous prime is 100909970017. The next prime is 100909970071. The reversal of 100909970021 is 120079909001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100909970021 - 2² = 100909970017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100909970071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175801055 + ... + 175801628.

It is an arithmetic number, because the mean of its divisors is an integer number (14767312728).

Almost surely, 2^100909970021 is an apocalyptic number.

It is an amenable number.

100909970021 is a deficient number, since it is larger than the sum of its proper divisors (17228531803).

100909970021 is an equidigital number, since it uses as much as digits as its factorization.

100909970021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351602731.

The product of its (nonzero) digits is 10206, while the sum is 38.

The spelling of 100909970021 in words is "one hundred billion, nine hundred nine million, nine hundred seventy thousand, twenty-one".