120111985 has 24 divisors (see below), whose sum is σ = 168920640. Its totient is φ = 81746784.

The previous prime is 120111983. The next prime is 120112009. The reversal of 120111985 is 589111021.

It is not a de Polignac number, because 120111985 - 2¹ = 120111983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120111983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32292 + ... + 35818.

It is an arithmetic number, because the mean of its divisors is an integer number (7038360).

Almost surely, 2^120111985 is an apocalyptic number.

It is an amenable number.

120111985 is a deficient number, since it is larger than the sum of its proper divisors (48808655).

120111985 is a wasteful number, since it uses less digits than its factorization.

120111985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3685 (or 3678 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 28.

The square root of 120111985 is about 10959.5613507111. The cubic root of 120111985 is about 493.3957998066.

The spelling of 120111985 in words is "one hundred twenty million, one hundred eleven thousand, nine hundred eighty-five".