120111988 has 12 divisors (see below), whose sum is σ = 210272832. Its totient is φ = 60034040.

The previous prime is 120111983. The next prime is 120112009. The reversal of 120111988 is 889111021.

It is a super-2 number, since 2×120111988² = 28853779322624288, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 17781 + ... + 23587.

It is an arithmetic number, because the mean of its divisors is an integer number (17522736).

Almost surely, 2^120111988 is an apocalyptic number.

It is an amenable number.

120111988 is a deficient number, since it is larger than the sum of its proper divisors (90160844).

120111988 is a wasteful number, since it uses less digits than its factorization.

120111988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10982 (or 10980 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 31.

The square root of 120111988 is about 10959.5614875779. The cubic root of 120111988 is about 493.3958039144.

The spelling of 120111988 in words is "one hundred twenty million, one hundred eleven thousand, nine hundred eighty-eight".