100120021107 has 4 divisors (see below), whose sum is σ = 133493361480. Its totient is φ = 66746680736.

The previous prime is 100120021097. The next prime is 100120021139. The reversal of 100120021107 is 701120021001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100120021107 - 2²⁰ = 100118972531 is a prime.

It is a super-2 number, since 2×100120021107² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100120021307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16686670182 + ... + 16686670187.

It is an arithmetic number, because the mean of its divisors is an integer number (33373340370).

Almost surely, 2^100120021107 is an apocalyptic number.

100120021107 is a deficient number, since it is larger than the sum of its proper divisors (33373340373).

100120021107 is an equidigital number, since it uses as much as digits as its factorization.

100120021107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33373340372.

The product of its (nonzero) digits is 28, while the sum is 15.

Adding to 100120021107 its reverse (701120021001), we get a palindrome (801240042108).

The spelling of 100120021107 in words is "one hundred billion, one hundred twenty million, twenty-one thousand, one hundred seven".