111112639 has 8 divisors (see below), whose sum is σ = 121893120. Its totient is φ = 100445400.

The previous prime is 111112637. The next prime is 111112667. The reversal of 111112639 is 936211111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111112639 - 2¹ = 111112637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26247 + ... + 30184.

It is an arithmetic number, because the mean of its divisors is an integer number (15236640).

Almost surely, 2^111112639 is an apocalyptic number.

111112639 is a deficient number, since it is larger than the sum of its proper divisors (10780481).

111112639 is a wasteful number, since it uses less digits than its factorization.

111112639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56621.

The product of its digits is 324, while the sum is 25.

The square root of 111112639 is about 10540.9980077790. The cubic root of 111112639 is about 480.7520603561.

The spelling of 111112639 in words is "one hundred eleven million, one hundred twelve thousand, six hundred thirty-nine".