331322212321 has 2 divisors, whose sum is σ = 331322212322. Its totient is φ = 331322212320.

The previous prime is 331322212301. The next prime is 331322212337. The reversal of 331322212321 is 123212223133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 271962250000 + 59359962321 = 521500^2 + 243639^2 .

It is a cyclic number.

It is not a de Polignac number, because 331322212321 - 2¹⁷ = 331322081249 is a prime.

It is not a weakly prime, because it can be changed into another prime (331322212301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165661106160 + 165661106161.

It is an arithmetic number, because the mean of its divisors is an integer number (165661106161).

Almost surely, 2^331322212321 is an apocalyptic number.

It is an amenable number.

331322212321 is a deficient number, since it is larger than the sum of its proper divisors (1).

331322212321 is an equidigital number, since it uses as much as digits as its factorization.

331322212321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 25.

Adding to 331322212321 its reverse (123212223133), we get a palindrome (454534435454).

The spelling of 331322212321 in words is "three hundred thirty-one billion, three hundred twenty-two million, two hundred twelve thousand, three hundred twenty-one".