100120120123 has 6 divisors (see below), whose sum is σ = 104662432364. Its totient is φ = 95767070916.

The previous prime is 100120120073. The next prime is 100120120153. The reversal of 100120120123 is 321021021001.

It is a de Polignac number, because none of the positive numbers 2^k-100120120123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100120120153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94630965 + ... + 94632022.

Almost surely, 2^100120120123 is an apocalyptic number.

100120120123 is a deficient number, since it is larger than the sum of its proper divisors (4542312241).

100120120123 is an equidigital number, since it uses as much as digits as its factorization.

100120120123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189263033 (or 189263010 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 100120120123 its reverse (321021021001), we get a palindrome (421141141124).

The spelling of 100120120123 in words is "one hundred billion, one hundred twenty million, one hundred twenty thousand, one hundred twenty-three".