111001323120 has 160 divisors (see below), whose sum is σ = 353605367808. Its totient is φ = 28783954944.

The previous prime is 111001323073. The next prime is 111001323131. The reversal of 111001323120 is 21323100111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111001323120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28120987 + ... + 28124933.

Almost surely, 2^111001323120 is an apocalyptic number.

111001323120 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 111001323120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176802683904).

111001323120 is an abundant number, since it is smaller than the sum of its proper divisors (242604044688).

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

111001323120 is a wasteful number, since it uses less digits than its factorization.

111001323120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7167 (or 7161 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 111001323120 its reverse (21323100111), we get a palindrome (132324423231).

The spelling of 111001323120 in words is "one hundred eleven billion, one million, three hundred twenty-three thousand, one hundred twenty".