323303110311221 has 2 divisors, whose sum is σ = 323303110311222. Its totient is φ = 323303110311220.

The previous prime is 323303110311217. The next prime is 323303110311257. The reversal of 323303110311221 is 122113011303323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198588691622500 + 124714418688721 = 14092150^2 + 11167561^2 .

It is a cyclic number.

It is not a de Polignac number, because 323303110311221 - 2² = 323303110311217 is a prime.

It is a super-2 number, since 2×323303110311221² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323303118311221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161651555155610 + 161651555155611.

It is an arithmetic number, because the mean of its divisors is an integer number (161651555155611).

Almost surely, 2^{323303110311221} is an apocalyptic number.

It is an amenable number.

323303110311221 is a deficient number, since it is larger than the sum of its proper divisors (1).

323303110311221 is an equidigital number, since it uses as much as digits as its factorization.

323303110311221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 323303110311221 its reverse (122113011303323), we get a palindrome (445416121614544).

The spelling of 323303110311221 in words is "three hundred twenty-three trillion, three hundred three billion, one hundred ten million, three hundred eleven thousand, two hundred twenty-one".