111112120 has 64 divisors (see below), whose sum is σ = 288619200. Its totient is φ = 37708800.

The previous prime is 111112087. The next prime is 111112121. The reversal of 111112120 is 21211111.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 111112097 and 111112106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26316 + ... + 30244.

It is an arithmetic number, because the mean of its divisors is an integer number (4509675).

Almost surely, 2^111112120 is an apocalyptic number.

111112120 is a gapful number since it is divisible by the number (10) 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 111112120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144309600).

111112120 is an abundant number, since it is smaller than the sum of its proper divisors (177507080).

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

111112120 is a wasteful number, since it uses less digits than its factorization.

111112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4048 (or 4044 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 111112120 is about 10540.9733895879. The cubic root of 111112120 is about 480.7513118343.

Adding to 111112120 its reverse (21211111), we get a palindrome (132323231).

It can be divided in two parts, 11111 and 2120, that added together give a palindrome (13231).

The spelling of 111112120 in words is "one hundred eleven million, one hundred twelve thousand, one hundred twenty".