12213333331321 has 2 divisors, whose sum is σ = 12213333331322. Its totient is φ = 12213333331320.

The previous prime is 12213333331307. The next prime is 12213333331357. The reversal of 12213333331321 is 12313333331221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12209356767721 + 3976563600 = 3494189^2 + 63060^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213333331321 - 2⁷ = 12213333331193 is a prime.

It is a super-2 number, since 2×12213333331321² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12213333331301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106666665660 + 6106666665661.

It is an arithmetic number, because the mean of its divisors is an integer number (6106666665661).

Almost surely, 2^{12213333331321} is an apocalyptic number.

It is an amenable number.

12213333331321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213333331321 is an equidigital number, since it uses as much as digits as its factorization.

12213333331321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 31.

Adding to 12213333331321 its reverse (12313333331221), we get a palindrome (24526666662542).

The spelling of 12213333331321 in words is "twelve trillion, two hundred thirteen billion, three hundred thirty-three million, three hundred thirty-one thousand, three hundred twenty-one".