111112320 has 128 divisors (see below), whose sum is σ = 386441280. Its totient is φ = 26931200.

The previous prime is 111112319. The next prime is 111112321. The reversal of 111112320 is 23211111.

It is an interprime number because it is at equal distance from previous prime (111112319) and next prime (111112321).

It is a tau number, because it is divible by the number of its divisors (128).

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

It is a junction number, because it is equal to n+sod(n) for n = 111112296 and 111112305.

It is not an unprimeable number, because it can be changed into a prime (111112321) 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, 18490 + ... + 23750.

Almost surely, 2^111112320 is an apocalyptic number.

111112320 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 111112320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193220640).

111112320 is an abundant number, since it is smaller than the sum of its proper divisors (275328960).

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

111112320 is a wasteful number, since it uses less digits than its factorization.

111112320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5294 (or 5282 counting only the distinct ones).

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

The square root of 111112320 is about 10540.9828763735. The cubic root of 111112320 is about 480.7516002823.

Adding to 111112320 its reverse (23211111), we get a palindrome (134323431).

It can be divided in two parts, 11111 and 2320, that added together give a palindrome (13431).

The spelling of 111112320 in words is "one hundred eleven million, one hundred twelve thousand, three hundred twenty".