1323360221 has 2 divisors, whose sum is σ = 1323360222. Its totient is φ = 1323360220.

The previous prime is 1323360211. The next prime is 1323360251. The reversal of 1323360221 is 1220633231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 728244196 + 595116025 = 26986^2 + 24395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1323360221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323360211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661680110 + 661680111.

It is an arithmetic number, because the mean of its divisors is an integer number (661680111).

Almost surely, 2^1323360221 is an apocalyptic number.

It is an amenable number.

1323360221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323360221 is an equidigital number, since it uses as much as digits as its factorization.

1323360221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 1323360221 is about 36378.0183764866. The cubic root of 1323360221 is about 1097.8913380368.

Adding to 1323360221 its reverse (1220633231), we get a palindrome (2543993452).

The spelling of 1323360221 in words is "one billion, three hundred twenty-three million, three hundred sixty thousand, two hundred twenty-one".