323232231216221 has 2 divisors, whose sum is σ = 323232231216222. Its totient is φ = 323232231216220.

The previous prime is 323232231216199. The next prime is 323232231216239. The reversal of 323232231216221 is 122612132232323.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213207131404996 + 110025099811225 = 14601614^2 + 10489285^2 .

It is an emirp because it is prime and its reverse (122612132232323) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 323232231216221 - 2³⁸ = 322957353309277 is a prime.

It is a super-3 number, since 3×323232231216221³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323232231219221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161616115608110 + 161616115608111.

It is an arithmetic number, because the mean of its divisors is an integer number (161616115608111).

Almost surely, 2^{323232231216221} is an apocalyptic number.

It is an amenable number.

323232231216221 is a deficient number, since it is larger than the sum of its proper divisors (1).

323232231216221 is an equidigital number, since it uses as much as digits as its factorization.

323232231216221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 35.

Adding to 323232231216221 its reverse (122612132232323), we get a palindrome (445844363448544).

The spelling of 323232231216221 in words is "three hundred twenty-three trillion, two hundred thirty-two billion, two hundred thirty-one million, two hundred sixteen thousand, two hundred twenty-one".