120016155 has 32 divisors (see below), whose sum is σ = 220760064. Its totient is φ = 54539136.

The previous prime is 120016111. The next prime is 120016157. The reversal of 120016155 is 551610021.

It is not a de Polignac number, because 120016155 - 2⁸ = 120015899 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (120016157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14862 + ... + 21468.

It is an arithmetic number, because the mean of its divisors is an integer number (6898752).

Almost surely, 2^120016155 is an apocalyptic number.

120016155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120016155 is a deficient number, since it is larger than the sum of its proper divisors (100743909).

120016155 is a wasteful number, since it uses less digits than its factorization.

120016155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6795.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 120016155 is about 10955.1884967809. The cubic root of 120016155 is about 493.2645481263.

Adding to 120016155 its reverse (551610021), we get a palindrome (671626176).

The spelling of 120016155 in words is "one hundred twenty million, sixteen thousand, one hundred fifty-five".