323212120110221 has 2 divisors, whose sum is σ = 323212120110222. Its totient is φ = 323212120110220.

The previous prime is 323212120110199. The next prime is 323212120110239. The reversal of 323212120110221 is 122011021212323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248353960562500 + 74858159547721 = 15759250^2 + 8652061^2 .

It is an emirp because it is prime and its reverse (122011021212323) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 323212120110221 - 2⁶ = 323212120110157 is a prime.

It is a super-2 number, since 2×323212120110221² (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 (323212120115221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161606060055110 + 161606060055111.

It is an arithmetic number, because the mean of its divisors is an integer number (161606060055111).

Almost surely, 2^{323212120110221} is an apocalyptic number.

It is an amenable number.

323212120110221 is a deficient number, since it is larger than the sum of its proper divisors (1).

323212120110221 is an equidigital number, since it uses as much as digits as its factorization.

323212120110221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 323212120110221 its reverse (122011021212323), we get a palindrome (445223141322544).

The spelling of 323212120110221 in words is "three hundred twenty-three trillion, two hundred twelve billion, one hundred twenty million, one hundred ten thousand, two hundred twenty-one".