3221232212321 has 2 divisors, whose sum is σ = 3221232212322. Its totient is φ = 3221232212320.

The previous prime is 3221232212197. The next prime is 3221232212369. The reversal of 3221232212321 is 1232122321223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1611033640225 + 1610198572096 = 1269265^2 + 1268936^2 .

It is an emirp because it is prime and its reverse (1232122321223) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3221232212321 is a prime.

It is not a weakly prime, because it can be changed into another prime (3221232242321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610616106160 + 1610616106161.

It is an arithmetic number, because the mean of its divisors is an integer number (1610616106161).

Almost surely, 2^{3221232212321} is an apocalyptic number.

It is an amenable number.

3221232212321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221232212321 is an equidigital number, since it uses as much as digits as its factorization.

3221232212321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 26.

Adding to 3221232212321 its reverse (1232122321223), we get a palindrome (4453354533544).

The spelling of 3221232212321 in words is "three trillion, two hundred twenty-one billion, two hundred thirty-two million, two hundred twelve thousand, three hundred twenty-one".