111112456 has 128 divisors (see below), whose sum is σ = 280224000. Its totient is φ = 40061952.

The previous prime is 111112451. The next prime is 111112481. The reversal of 111112456 is 654211111.

It is a happy number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (111112451) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 400990 + ... + 401266.

It is an arithmetic number, because the mean of its divisors is an integer number (2189250).

Almost surely, 2^111112456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111112456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140112000).

111112456 is an abundant number, since it is smaller than the sum of its proper divisors (169111544).

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

111112456 is a wasteful number, since it uses less digits than its factorization.

111112456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 347 counting only the distinct ones).

The product of its digits is 240, while the sum is 22.

The square root of 111112456 is about 10540.9893273829. The cubic root of 111112456 is about 480.7517964267.

Adding to 111112456 its reverse (654211111), we get a palindrome (765323567).

The spelling of 111112456 in words is "one hundred eleven million, one hundred twelve thousand, four hundred fifty-six".