12123315223 has 2 divisors, whose sum is σ = 12123315224. Its totient is φ = 12123315222.

The previous prime is 12123315151. The next prime is 12123315229. The reversal of 12123315223 is 32251332121.

12123315223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12123315223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12123315229) 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, 6061657611 + 6061657612.

It is an arithmetic number, because the mean of its divisors is an integer number (6061657612).

Almost surely, 2^12123315223 is an apocalyptic number.

12123315223 is a deficient number, since it is larger than the sum of its proper divisors (1).

12123315223 is an equidigital number, since it uses as much as digits as its factorization.

12123315223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

Adding to 12123315223 its reverse (32251332121), we get a palindrome (44374647344).

The spelling of 12123315223 in words is "twelve billion, one hundred twenty-three million, three hundred fifteen thousand, two hundred twenty-three".