323212221330161 has 2 divisors, whose sum is σ = 323212221330162. Its totient is φ = 323212221330160.

The previous prime is 323212221330149. The next prime is 323212221330179. The reversal of 323212221330161 is 161033122212323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240934967526400 + 82277253803761 = 15522080^2 + 9070681^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323212221330161 is a prime.

It is a super-2 number, since 2×323212221330161² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (323212221330461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161606110665080 + 161606110665081.

It is an arithmetic number, because the mean of its divisors is an integer number (161606110665081).

Almost surely, 2^{323212221330161} is an apocalyptic number.

It is an amenable number.

323212221330161 is a deficient number, since it is larger than the sum of its proper divisors (1).

323212221330161 is an equidigital number, since it uses as much as digits as its factorization.

323212221330161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

Adding to 323212221330161 its reverse (161033122212323), we get a palindrome (484245343542484).

The spelling of 323212221330161 in words is "three hundred twenty-three trillion, two hundred twelve billion, two hundred twenty-one million, three hundred thirty thousand, one hundred sixty-one".