100120120021 has 8 divisors (see below), whose sum is σ = 103742774784. Its totient is φ = 96522026160.

The previous prime is 100120120007. The next prime is 100120120039. The reversal of 100120120021 is 120021021001.

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 100120120021 - 2³⁵ = 65760381653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100120150021) 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, 6131926 + ... + 6148231.

It is an arithmetic number, because the mean of its divisors is an integer number (12967846848).

Almost surely, 2^100120120021 is an apocalyptic number.

It is an amenable number.

100120120021 is a deficient number, since it is larger than the sum of its proper divisors (3622654763).

100120120021 is a wasteful number, since it uses less digits than its factorization.

100120120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12280451.

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

Adding to 100120120021 its reverse (120021021001), we get a palindrome (220141141022).

The spelling of 100120120021 in words is "one hundred billion, one hundred twenty million, one hundred twenty thousand, twenty-one".