111228243 has 16 divisors (see below), whose sum is σ = 169775616. Its totient is φ = 63452160.

The previous prime is 111228233. The next prime is 111228269. The reversal of 111228243 is 342822111.

It is not a de Polignac number, because 111228243 - 2⁵ = 111228211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111228233) 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 15 ways as a sum of consecutive naturals, for example, 9330 + ... + 17592.

It is an arithmetic number, because the mean of its divisors is an integer number (10610976).

Almost surely, 2^111228243 is an apocalyptic number.

111228243 is a deficient number, since it is larger than the sum of its proper divisors (58547373).

111228243 is an equidigital number, since it uses as much as digits as its factorization.

111228243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8914.

The product of its digits is 768, while the sum is 24.

The square root of 111228243 is about 10546.4801237190. The cubic root of 111228243 is about 480.9187308578.

The spelling of 111228243 in words is "one hundred eleven million, two hundred twenty-eight thousand, two hundred forty-three".