111442224 has 80 divisors (see below), whose sum is σ = 298552320. Its totient is φ = 35792640.

The previous prime is 111442171. The next prime is 111442229. The reversal of 111442224 is 422244111.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 111442224.

It is not an unprimeable number, because it can be changed into a prime (111442229) 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, 232417 + ... + 232895.

It is an arithmetic number, because the mean of its divisors is an integer number (3731904).

Almost surely, 2^111442224 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 111442224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149276160).

111442224 is an abundant number, since it is smaller than the sum of its proper divisors (187110096).

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

111442224 is a wasteful number, since it uses less digits than its factorization.

111442224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 652 counting only the distinct ones).

The product of its digits is 512, while the sum is 21.

The square root of 111442224 is about 10556.6199135898. The cubic root of 111442224 is about 481.2269306083.

Adding to 111442224 its reverse (422244111), we get a palindrome (533686335).

The spelling of 111442224 in words is "one hundred eleven million, four hundred forty-two thousand, two hundred twenty-four".