111944111 has 8 divisors (see below), whose sum is σ = 114377760. Its totient is φ = 109536768.

The previous prime is 111944071. The next prime is 111944117. The reversal of 111944111 is 111449111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111944111 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 (111944117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2150 + ... + 15116.

It is an arithmetic number, because the mean of its divisors is an integer number (14297220).

Almost surely, 2^111944111 is an apocalyptic number.

111944111 is a deficient number, since it is larger than the sum of its proper divisors (2433649).

111944111 is an equidigital number, since it uses as much as digits as its factorization.

111944111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13153.

The product of its digits is 144, while the sum is 23.

The square root of 111944111 is about 10580.3644077130. The cubic root of 111944111 is about 481.9482606608.

The spelling of 111944111 in words is "one hundred eleven million, nine hundred forty-four thousand, one hundred eleven".