12999223 has 2 divisors, whose sum is σ = 12999224. Its totient is φ = 12999222.

The previous prime is 12999193. The next prime is 12999241. The reversal of 12999223 is 32299921.

12999223 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (32299921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12999223 - 2⁵ = 12999191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12999253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6499611 + 6499612.

It is an arithmetic number, because the mean of its divisors is an integer number (6499612).

Almost surely, 2^12999223 is an apocalyptic number.

12999223 is a deficient number, since it is larger than the sum of its proper divisors (1).

12999223 is an equidigital number, since it uses as much as digits as its factorization.

12999223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 37.

The square root of 12999223 is about 3605.4435233408. The cubic root of 12999223 is about 235.1287840966.

The spelling of 12999223 in words is "twelve million, nine hundred ninety-nine thousand, two hundred twenty-three".