111443120 has 20 divisors (see below), whose sum is σ = 259105440. Its totient is φ = 44577216.

The previous prime is 111443099. The next prime is 111443131. The reversal of 111443120 is 21344111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

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, 696440 + ... + 696599.

It is an arithmetic number, because the mean of its divisors is an integer number (12955272).

Almost surely, 2^111443120 is an apocalyptic number.

111443120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111443120 is an abundant number, since it is smaller than the sum of its proper divisors (147662320).

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

111443120 is a wasteful number, since it uses less digits than its factorization.

111443120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393052 (or 1393046 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 111443120 is about 10556.6623513306. The cubic root of 111443120 is about 481.2282202995.

Adding to 111443120 its reverse (21344111), we get a palindrome (132787231).

Subtracting from 111443120 its reverse (21344111), we obtain a palindrome (90099009).

The spelling of 111443120 in words is "one hundred eleven million, four hundred forty-three thousand, one hundred twenty".