120101985 has 24 divisors (see below), whose sum is σ = 211594344. Its totient is φ = 63002880.

The previous prime is 120101959. The next prime is 120101987. The reversal of 120101985 is 589101021.

It can be written as a sum of positive squares in 4 ways, for example, as 2304 + 120099681 = 48^2 + 10959^2 .

It is not a de Polignac number, because 120101985 - 2⁵ = 120101953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120101987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19132 + ... + 24621.

It is an arithmetic number, because the mean of its divisors is an integer number (8816431).

Almost surely, 2^120101985 is an apocalyptic number.

120101985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120101985 is a deficient number, since it is larger than the sum of its proper divisors (91492359).

120101985 is a wasteful number, since it uses less digits than its factorization.

120101985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43825 (or 43822 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 120101985 is about 10959.1051185761. The cubic root of 120101985 is about 493.3821067658.

The spelling of 120101985 in words is "one hundred twenty million, one hundred one thousand, nine hundred eighty-five".