111312032111 has 4 divisors (see below), whose sum is σ = 127213750992. Its totient is φ = 95410313232.

The previous prime is 111312032099. The next prime is 111312032119. The reversal of 111312032111 is 111230213111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111230213111 = 8089 ⋅13750799.

It is a cyclic number.

It is not a de Polignac number, because 111312032111 - 2²⁶ = 111244923247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111312032111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111312032119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7950859430 + ... + 7950859443.

It is an arithmetic number, because the mean of its divisors is an integer number (31803437748).

Almost surely, 2^111312032111 is an apocalyptic number.

111312032111 is a deficient number, since it is larger than the sum of its proper divisors (15901718881).

111312032111 is an equidigital number, since it uses as much as digits as its factorization.

111312032111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15901718880.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 111312032111 its reverse (111230213111), we get a palindrome (222542245222).

The spelling of 111312032111 in words is "one hundred eleven billion, three hundred twelve million, thirty-two thousand, one hundred eleven".