12131110111 has 2 divisors, whose sum is σ = 12131110112. Its totient is φ = 12131110110.

The previous prime is 12131110093. The next prime is 12131110129. The reversal of 12131110111 is 11101113121.

12131110111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (12131110093) and next prime (12131110129).

It is a cyclic number.

It is not a de Polignac number, because 12131110111 - 2¹⁹ = 12130585823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12131110091 and 12131110100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12131110171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6065555055 + 6065555056.

It is an arithmetic number, because the mean of its divisors is an integer number (6065555056).

Almost surely, 2^12131110111 is an apocalyptic number.

12131110111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12131110111 is an equidigital number, since it uses as much as digits as its factorization.

12131110111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 13.

Adding to 12131110111 its reverse (11101113121), we get a palindrome (23232223232).

The spelling of 12131110111 in words is "twelve billion, one hundred thirty-one million, one hundred ten thousand, one hundred eleven".