120111312 has 40 divisors (see below), whose sum is σ = 326620960. Its totient is φ = 37929600.

The previous prime is 120111283. The next prime is 120111319. The reversal of 120111312 is 213111021.

It is a super-2 number, since 2×120111312² = 28853454540722688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120111319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64939 + ... + 66762.

It is an arithmetic number, because the mean of its divisors is an integer number (8165524).

Almost surely, 2^120111312 is an apocalyptic number.

120111312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120111312 is an abundant number, since it is smaller than the sum of its proper divisors (206509648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120111312 is a wasteful number, since it uses less digits than its factorization.

120111312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131731 (or 131725 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 120111312 is about 10959.5306468845. The cubic root of 120111312 is about 493.3948782888.

Adding to 120111312 its reverse (213111021), we get a palindrome (333222333).

The spelling of 120111312 in words is "one hundred twenty million, one hundred eleven thousand, three hundred twelve".