120016999 has 4 divisors (see below), whose sum is σ = 122808136. Its totient is φ = 117225864.

The previous prime is 120016997. The next prime is 120017017. The reversal of 120016999 is 999610021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999610021 = 139 ⋅7191439.

It is a cyclic number.

It is not a de Polignac number, because 120016999 - 2¹ = 120016997 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 (120016997) 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, 1395504 + ... + 1395589.

It is an arithmetic number, because the mean of its divisors is an integer number (30702034).

Almost surely, 2^120016999 is an apocalyptic number.

120016999 is a deficient number, since it is larger than the sum of its proper divisors (2791137).

120016999 is an equidigital number, since it uses as much as digits as its factorization.

120016999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791136.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 120016999 is about 10955.2270172735. The cubic root of 120016999 is about 493.2657043992.

The spelling of 120016999 in words is "one hundred twenty million, sixteen thousand, nine hundred ninety-nine".