111225440 has 48 divisors (see below), whose sum is σ = 271842480. Its totient is φ = 42954240.

The previous prime is 111225431. The next prime is 111225451. The reversal of 111225440 is 44522111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7346 + ... + 16625.

It is an arithmetic number, because the mean of its divisors is an integer number (5663385).

Almost surely, 2^111225440 is an apocalyptic number.

111225440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111225440 is an abundant number, since it is smaller than the sum of its proper divisors (160617040).

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

111225440 is a wasteful number, since it uses less digits than its factorization.

111225440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24015 (or 24007 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 111225440 is about 10546.3472349435. The cubic root of 111225440 is about 480.9146910370.

Adding to 111225440 its reverse (44522111), we get a palindrome (155747551).

The spelling of 111225440 in words is "one hundred eleven million, two hundred twenty-five thousand, four hundred forty".