323323313232221 has 2 divisors, whose sum is σ = 323323313232222. Its totient is φ = 323323313232220.

The previous prime is 323323313232197. The next prime is 323323313232349. The reversal of 323323313232221 is 122232313323323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207428722492996 + 115894590739225 = 14402386^2 + 10765435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323323313232221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323323315232221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161661656616110 + 161661656616111.

It is an arithmetic number, because the mean of its divisors is an integer number (161661656616111).

Almost surely, 2^{323323313232221} is an apocalyptic number.

It is an amenable number.

323323313232221 is a deficient number, since it is larger than the sum of its proper divisors (1).

323323313232221 is an equidigital number, since it uses as much as digits as its factorization.

323323313232221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 35.

Adding to 323323313232221 its reverse (122232313323323), we get a palindrome (445555626555544).

The spelling of 323323313232221 in words is "three hundred twenty-three trillion, three hundred twenty-three billion, three hundred thirteen million, two hundred thirty-two thousand, two hundred twenty-one".