12304221421 has 2 divisors, whose sum is σ = 12304221422. Its totient is φ = 12304221420.

The previous prime is 12304221341. The next prime is 12304221487. The reversal of 12304221421 is 12412240321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8374812196 + 3929409225 = 91514^2 + 62685^2 .

It is a cyclic number.

It is not a de Polignac number, because 12304221421 - 2¹⁵ = 12304188653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12304221392 and 12304221401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12304221521) 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, 6152110710 + 6152110711.

It is an arithmetic number, because the mean of its divisors is an integer number (6152110711).

Almost surely, 2^12304221421 is an apocalyptic number.

It is an amenable number.

12304221421 is a deficient number, since it is larger than the sum of its proper divisors (1).

12304221421 is an equidigital number, since it uses as much as digits as its factorization.

12304221421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 12304221421 its reverse (12412240321), we get a palindrome (24716461742).

The spelling of 12304221421 in words is "twelve billion, three hundred four million, two hundred twenty-one thousand, four hundred twenty-one".