111444223 has 16 divisors (see below), whose sum is σ = 127814400. Its totient is φ = 96180480.

The previous prime is 111444217. The next prime is 111444233. The reversal of 111444223 is 322444111.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-111444223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111444194 and 111444203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111444233) 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, 33583 + ... + 36751.

It is an arithmetic number, because the mean of its divisors is an integer number (7988400).

Almost surely, 2^111444223 is an apocalyptic number.

111444223 is a deficient number, since it is larger than the sum of its proper divisors (16370177).

111444223 is a wasteful number, since it uses less digits than its factorization.

111444223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3342.

The product of its digits is 768, while the sum is 22.

The square root of 111444223 is about 10556.7145930919. The cubic root of 111444223 is about 481.2298079345.

Adding to 111444223 its reverse (322444111), we get a palindrome (433888334).

The spelling of 111444223 in words is "one hundred eleven million, four hundred forty-four thousand, two hundred twenty-three".