12321223 has 2 divisors, whose sum is σ = 12321224. Its totient is φ = 12321222.

The previous prime is 12321193. The next prime is 12321227. The reversal of 12321223 is 32212321.

It is a strong prime.

It is an emirp because it is prime and its reverse (32212321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12321223 - 2¹⁷ = 12190151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12321197 and 12321206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12321227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160611 + 6160612.

It is an arithmetic number, because the mean of its divisors is an integer number (6160612).

Almost surely, 2^12321223 is an apocalyptic number.

12321223 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321223 is an equidigital number, since it uses as much as digits as its factorization.

12321223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 16.

The square root of 12321223 is about 3510.1599678647. The cubic root of 12321223 is about 230.9677122342.

Adding to 12321223 its reverse (32212321), we get a palindrome (44533544).

It can be divided in two parts, 12321 and 223, that added together give a square (12544 = 112²).

The spelling of 12321223 in words is "twelve million, three hundred twenty-one thousand, two hundred twenty-three".