111320311111 has 4 divisors (see below), whose sum is σ = 111641119272. Its totient is φ = 110999502952.

The previous prime is 111320311097. The next prime is 111320311129. The reversal of 111320311111 is 111113023111.

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 111320311111 - 2¹⁵ = 111320278343 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 (111320312111) 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, 160403560 + ... + 160404253.

It is an arithmetic number, because the mean of its divisors is an integer number (27910279818).

Almost surely, 2^111320311111 is an apocalyptic number.

111320311111 is a deficient number, since it is larger than the sum of its proper divisors (320808161).

111320311111 is an equidigital number, since it uses as much as digits as its factorization.

111320311111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320808160.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 111320311111 its reverse (111113023111), we get a palindrome (222433334222).

The spelling of 111320311111 in words is "one hundred eleven billion, three hundred twenty million, three hundred eleven thousand, one hundred eleven".