111031312211 has 6 divisors (see below), whose sum is σ = 116068650180. Its totient is φ = 106203863348.

The previous prime is 111031312181. The next prime is 111031312213. The reversal of 111031312211 is 112213130111.

It is a de Polignac number, because none of the positive numbers 2^k-111031312211 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 111031312211.

It is not an unprimeable number, because it can be changed into a prime (111031312213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104944001 + ... + 104945058.

It is an arithmetic number, because the mean of its divisors is an integer number (19344775030).

Almost surely, 2^111031312211 is an apocalyptic number.

111031312211 is a deficient number, since it is larger than the sum of its proper divisors (5037337969).

111031312211 is an equidigital number, since it uses as much as digits as its factorization.

111031312211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209889105 (or 209889082 counting only the distinct ones).

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

Adding to 111031312211 its reverse (112213130111), we get a palindrome (223244442322).

The spelling of 111031312211 in words is "one hundred eleven billion, thirty-one million, three hundred twelve thousand, two hundred eleven".