111001111000111 has 4 divisors (see below), whose sum is σ = 111001632832224. Its totient is φ = 111000589168000.

The previous prime is 111001111000099. The next prime is 111001111000121. The reversal of 111001111000111 is 111000111100111.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 111001111000111 - 2²⁵ = 111001077445679 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111001111000121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260596855 + ... + 261022456.

It is an arithmetic number, because the mean of its divisors is an integer number (27750408208056).

Almost surely, 2^{111001111000111} is an apocalyptic number.

111001111000111 is a deficient number, since it is larger than the sum of its proper divisors (521832113).

111001111000111 is an equidigital number, since it uses as much as digits as its factorization.

111001111000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521832112.

The product of its (nonzero) digits is 1, while the sum is 10.

Adding to 111001111000111 its reverse (111000111100111), we get a palindrome (222001222100222).

The spelling of 111001111000111 in words is "one hundred eleven trillion, one billion, one hundred eleven million, one hundred eleven", and thus it is an aban number.