323322221221 has 2 divisors, whose sum is σ = 323322221222. Its totient is φ = 323322221220.

The previous prime is 323322221197. The next prime is 323322221249. The reversal of 323322221221 is 122122223323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320485060996 + 2837160225 = 566114^2 + 53265^2 .

It is an emirp because it is prime and its reverse (122122223323) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 323322221221 - 2²¹ = 323320124069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323322221251) 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, 161661110610 + 161661110611.

It is an arithmetic number, because the mean of its divisors is an integer number (161661110611).

Almost surely, 2^323322221221 is an apocalyptic number.

It is an amenable number.

323322221221 is a deficient number, since it is larger than the sum of its proper divisors (1).

323322221221 is an equidigital number, since it uses as much as digits as its factorization.

323322221221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 25.

Adding to 323322221221 its reverse (122122223323), we get a palindrome (445444444544).

The spelling of 323322221221 in words is "three hundred twenty-three billion, three hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-one".