12321203 has 4 divisors (see below), whose sum is σ = 12399840. Its totient is φ = 12242568.

The previous prime is 12321193. The next prime is 12321223. The reversal of 12321203 is 30212321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30212321 = 31 ⋅974591.

It is a cyclic number.

It is not a de Polignac number, because 12321203 - 2⁴ = 12321187 is a prime.

It is a Duffinian 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, 39083 + ... + 39396.

It is an arithmetic number, because the mean of its divisors is an integer number (3099960).

Almost surely, 2^12321203 is an apocalyptic number.

12321203 is a deficient number, since it is larger than the sum of its proper divisors (78637).

12321203 is an equidigital number, since it uses as much as digits as its factorization.

12321203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78636.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 12321203 is about 3510.1571189905. The cubic root of 12321203 is about 230.9675872640.

Adding to 12321203 its reverse (30212321), we get a palindrome (42533524).

The spelling of 12321203 in words is "twelve million, three hundred twenty-one thousand, two hundred three".