111451120 has 80 divisors (see below), whose sum is σ = 289668960. Its totient is φ = 39526400.

The previous prime is 111451117. The next prime is 111451129. The reversal of 111451120 is 21154111.

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

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 111451094 and 111451103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111451129) 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, 34536 + ... + 37624.

It is an arithmetic number, because the mean of its divisors is an integer number (3620862).

Almost surely, 2^111451120 is an apocalyptic number.

111451120 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 111451120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144834480).

111451120 is an abundant number, since it is smaller than the sum of its proper divisors (178217840).

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

111451120 is a wasteful number, since it uses less digits than its factorization.

111451120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3154 (or 3148 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 111451120 is about 10557.0412521691. The cubic root of 111451120 is about 481.2397350934.

The spelling of 111451120 in words is "one hundred eleven million, four hundred fifty-one thousand, one hundred twenty".