12013321 has 2 divisors, whose sum is σ = 12013322. Its totient is φ = 12013320.

The previous prime is 12013307. The next prime is 12013333. The reversal of 12013321 is 12331021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7868025 + 4145296 = 2805^2 + 2036^2 .

It is a cyclic number.

It is not a de Polignac number, because 12013321 - 2⁹ = 12012809 is a prime.

It is not a weakly prime, because it can be changed into another prime (12013361) 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, 6006660 + 6006661.

It is an arithmetic number, because the mean of its divisors is an integer number (6006661).

Almost surely, 2^12013321 is an apocalyptic number.

It is an amenable number.

12013321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12013321 is an equidigital number, since it uses as much as digits as its factorization.

12013321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 12013321 is about 3466.0238025726. The cubic root of 12013321 is about 229.0275323965.

Adding to 12013321 its reverse (12331021), we get a palindrome (24344342).

The spelling of 12013321 in words is "twelve million, thirteen thousand, three hundred twenty-one".