12203441321 has 2 divisors, whose sum is σ = 12203441322. Its totient is φ = 12203441320.

The previous prime is 12203441297. The next prime is 12203441329. The reversal of 12203441321 is 12314430221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11116750096 + 1086691225 = 105436^2 + 32965^2 .

It is an emirp because it is prime and its reverse (12314430221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12203441321 is a prime.

It is not a weakly prime, because it can be changed into another prime (12203441329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6101720660 + 6101720661.

It is an arithmetic number, because the mean of its divisors is an integer number (6101720661).

Almost surely, 2^12203441321 is an apocalyptic number.

It is an amenable number.

12203441321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12203441321 is an equidigital number, since it uses as much as digits as its factorization.

12203441321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 12203441321 its reverse (12314430221), we get a palindrome (24517871542).

The spelling of 12203441321 in words is "twelve billion, two hundred three million, four hundred forty-one thousand, three hundred twenty-one".