1323324221 has 4 divisors (see below), whose sum is σ = 1325382912. Its totient is φ = 1321265532.

The previous prime is 1323324133. The next prime is 1323324227. The reversal of 1323324221 is 1224233231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1323324221 - 2³⁰ = 249582397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323324227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1028381 + ... + 1029666.

It is an arithmetic number, because the mean of its divisors is an integer number (331345728).

Almost surely, 2^1323324221 is an apocalyptic number.

It is an amenable number.

1323324221 is a deficient number, since it is larger than the sum of its proper divisors (2058691).

1323324221 is an equidigital number, since it uses as much as digits as its factorization.

1323324221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058690.

The product of its digits is 1728, while the sum is 23.

The square root of 1323324221 is about 36377.5235688192. The cubic root of 1323324221 is about 1097.8813824591.

Adding to 1323324221 its reverse (1224233231), we get a palindrome (2547557452).

The spelling of 1323324221 in words is "one billion, three hundred twenty-three million, three hundred twenty-four thousand, two hundred twenty-one".