12123132223 has 2 divisors, whose sum is σ = 12123132224. Its totient is φ = 12123132222.

The previous prime is 12123132181. The next prime is 12123132289. The reversal of 12123132223 is 32223132121.

12123132223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12123132223 - 2⁹ = 12123131711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12123132194 and 12123132203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12123132523) 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, 6061566111 + 6061566112.

It is an arithmetic number, because the mean of its divisors is an integer number (6061566112).

Almost surely, 2^12123132223 is an apocalyptic number.

12123132223 is a deficient number, since it is larger than the sum of its proper divisors (1).

12123132223 is an equidigital number, since it uses as much as digits as its factorization.

12123132223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 22.

Adding to 12123132223 its reverse (32223132121), we get a palindrome (44346264344).

The spelling of 12123132223 in words is "twelve billion, one hundred twenty-three million, one hundred thirty-two thousand, two hundred twenty-three".