322323131222221 has 2 divisors, whose sum is σ = 322323131222222. Its totient is φ = 322323131222220.

The previous prime is 322323131222219. The next prime is 322323131222303. The reversal of 322323131222221 is 122222131323223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318672089229321 + 3651041992900 = 17851389^2 + 1910770^2 .

It is a cyclic number.

It is not a de Polignac number, because 322323131222221 - 2¹ = 322323131222219 is a prime.

Together with 322323131222219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (322323131222021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161161565611110 + 161161565611111.

It is an arithmetic number, because the mean of its divisors is an integer number (161161565611111).

Almost surely, 2^{322323131222221} is an apocalyptic number.

It is an amenable number.

322323131222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

322323131222221 is an equidigital number, since it uses as much as digits as its factorization.

322323131222221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 31.

Adding to 322323131222221 its reverse (122222131323223), we get a palindrome (444545262545444).

The spelling of 322323131222221 in words is "three hundred twenty-two trillion, three hundred twenty-three billion, one hundred thirty-one million, two hundred twenty-two thousand, two hundred twenty-one".