111143120 has 80 divisors (see below), whose sum is σ = 287338752. Its totient is φ = 39636480.

The previous prime is 111143119. The next prime is 111143171. The reversal of 111143120 is 21341111.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 111143095 and 111143104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45449 + ... + 47831.

Almost surely, 2^111143120 is an apocalyptic number.

111143120 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 111143120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143669376).

111143120 is an abundant number, since it is smaller than the sum of its proper divisors (176195632).

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

111143120 is a wasteful number, since it uses less digits than its factorization.

111143120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460 (or 2454 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 111143120 is about 10542.4437394752. The cubic root of 111143120 is about 480.7960171430.

Adding to 111143120 its reverse (21341111), we get a palindrome (132484231).

The spelling of 111143120 in words is "one hundred eleven million, one hundred forty-three thousand, one hundred twenty".