111112145 has 4 divisors (see below), whose sum is σ = 133334580. Its totient is φ = 88889712.

The previous prime is 111112121. The next prime is 111112181. The reversal of 111112145 is 541211111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76807696 + 34304449 = 8764^2 + 5857^2 .

It is a cyclic number.

It is not a de Polignac number, because 111112145 - 2⁶ = 111112081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11111210 + ... + 11111219.

It is an arithmetic number, because the mean of its divisors is an integer number (33333645).

Almost surely, 2^111112145 is an apocalyptic number.

It is an amenable number.

111112145 is a deficient number, since it is larger than the sum of its proper divisors (22222435).

111112145 is an equidigital number, since it uses as much as digits as its factorization.

111112145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22222434.

The product of its digits is 40, while the sum is 17.

The square root of 111112145 is about 10540.9745754366. The cubic root of 111112145 is about 480.7513478903.

Adding to 111112145 its reverse (541211111), we get a palindrome (652323256).

The spelling of 111112145 in words is "one hundred eleven million, one hundred twelve thousand, one hundred forty-five".