111228565 has 16 divisors (see below), whose sum is σ = 160571520. Its totient is φ = 72256320.

The previous prime is 111228547. The next prime is 111228571. The reversal of 111228565 is 565822111.

It is not a de Polignac number, because 111228565 - 2¹¹ = 111226517 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 82966 + ... + 84295.

It is an arithmetic number, because the mean of its divisors is an integer number (10035720).

Almost surely, 2^111228565 is an apocalyptic number.

It is an amenable number.

111228565 is a deficient number, since it is larger than the sum of its proper divisors (49342955).

111228565 is a wasteful number, since it uses less digits than its factorization.

111228565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167292.

The product of its digits is 4800, while the sum is 31.

The square root of 111228565 is about 10546.4953894647. The cubic root of 111228565 is about 480.9191949356.

The spelling of 111228565 in words is "one hundred eleven million, two hundred twenty-eight thousand, five hundred sixty-five".