12322021421 has 2 divisors, whose sum is σ = 12322021422. Its totient is φ = 12322021420.

The previous prime is 12322021409. The next prime is 12322021427. The reversal of 12322021421 is 12412022321.

12322021421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6414408100 + 5907613321 = 80090^2 + 76861^2 .

It is a cyclic number.

It is not a de Polignac number, because 12322021421 - 2³⁰ = 11248279597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12322021393 and 12322021402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12322021427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6161010710 + 6161010711.

It is an arithmetic number, because the mean of its divisors is an integer number (6161010711).

Almost surely, 2^12322021421 is an apocalyptic number.

It is an amenable number.

12322021421 is a deficient number, since it is larger than the sum of its proper divisors (1).

12322021421 is an equidigital number, since it uses as much as digits as its factorization.

12322021421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12322021421 its reverse (12412022321), we get a palindrome (24734043742).

The spelling of 12322021421 in words is "twelve billion, three hundred twenty-two million, twenty-one thousand, four hundred twenty-one".