120999999999923 has 12 divisors (see below), whose sum is σ = 140221453290792. Its totient is φ = 103529411761920.

The previous prime is 120999999999887. The next prime is 120999999999941. The reversal of 120999999999923 is 329999999999021.

It is not a de Polignac number, because 120999999999923 - 2¹⁴ = 120999999983539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120999999999923.

It is not an unprimeable number, because it can be changed into a prime (120999999099923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19031138690 + ... + 19031145047.

It is an arithmetic number, because the mean of its divisors is an integer number (11685121107566).

Almost surely, 2^{120999999999923} is an apocalyptic number.

120999999999923 is a deficient number, since it is larger than the sum of its proper divisors (19221453290869).

120999999999923 is a wasteful number, since it uses less digits than its factorization.

120999999999923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38062283782 (or 38062283765 counting only the distinct ones).

The product of its (nonzero) digits is 41841412812, while the sum is 98.

The spelling of 120999999999923 in words is "one hundred twenty trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred twenty-three".