12022321 has 2 divisors, whose sum is σ = 12022322. Its totient is φ = 12022320.

The previous prime is 12022313. The next prime is 12022337. The reversal of 12022321 is 12322021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11806096 + 216225 = 3436^2 + 465^2 .

It is a cyclic number.

It is not a de Polignac number, because 12022321 - 2³ = 12022313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12002321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6011160 + 6011161.

It is an arithmetic number, because the mean of its divisors is an integer number (6011161).

Almost surely, 2^12022321 is an apocalyptic number.

It is an amenable number.

12022321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12022321 is an equidigital number, since it uses as much as digits as its factorization.

12022321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12022321 is about 3467.3218771842. The cubic root of 12022321 is about 229.0847115136.

Adding to 12022321 its reverse (12322021), we get a palindrome (24344342).

The spelling of 12022321 in words is "twelve million, twenty-two thousand, three hundred twenty-one".