111120912 has 120 divisors (see below), whose sum is σ = 370940544. Its totient is φ = 30362112.

The previous prime is 111120887. The next prime is 111120937. The reversal of 111120912 is 219021111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111120887) and next prime (111120937).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20788 + ... + 25580.

Almost surely, 2^111120912 is an apocalyptic number.

111120912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111120912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185470272).

111120912 is an abundant number, since it is smaller than the sum of its proper divisors (259819632).

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

111120912 is a wasteful number, since it uses less digits than its factorization.

111120912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4837 (or 4828 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The square root of 111120912 is about 10541.3904206229. The cubic root of 111120912 is about 480.7639916813.

It can be divided in two parts, 1111 and 20912, that multiplied together give a palindrome (23233232).

The spelling of 111120912 in words is "one hundred eleven million, one hundred twenty thousand, nine hundred twelve".