12331112111 has 2 divisors, whose sum is σ = 12331112112. Its totient is φ = 12331112110.

The previous prime is 12331112093. The next prime is 12331112147. The reversal of 12331112111 is 11121113321.

It is a m-pointer prime, because the next prime (12331112147) can be obtained adding 12331112111 to its product of digits (36).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12331112111 - 2⁶ = 12331112047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12331112111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12331112161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6165556055 + 6165556056.

It is an arithmetic number, because the mean of its divisors is an integer number (6165556056).

Almost surely, 2^12331112111 is an apocalyptic number.

12331112111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12331112111 is an equidigital number, since it uses as much as digits as its factorization.

12331112111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 12331112111 its reverse (11121113321), we get a palindrome (23452225432).

The spelling of 12331112111 in words is "twelve billion, three hundred thirty-one million, one hundred twelve thousand, one hundred eleven".