12321229 has 4 divisors (see below), whose sum is σ = 12718720. Its totient is φ = 11923740.

The previous prime is 12321227. The next prime is 12321241. The reversal of 12321229 is 92212321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12321229 - 2¹ = 12321227 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321223) 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 in 3 ways as a sum of consecutive naturals, for example, 198699 + ... + 198760.

It is an arithmetic number, because the mean of its divisors is an integer number (3179680).

Almost surely, 2^12321229 is an apocalyptic number.

It is an amenable number.

12321229 is a deficient number, since it is larger than the sum of its proper divisors (397491).

12321229 is an equidigital number, since it uses as much as digits as its factorization.

12321229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397490.

The product of its digits is 432, while the sum is 22.

The square root of 12321229 is about 3510.1608225265. The cubic root of 12321229 is about 230.9677497252.

The spelling of 12321229 in words is "twelve million, three hundred twenty-one thousand, two hundred twenty-nine".