1323325221 has 4 divisors (see below), whose sum is σ = 1764433632. Its totient is φ = 882216812.

The previous prime is 1323325207. The next prime is 1323325229. The reversal of 1323325221 is 1225233231.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-1323325221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1323325191 and 1323325200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323325229) 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, 220554201 + ... + 220554206.

It is an arithmetic number, because the mean of its divisors is an integer number (441108408).

Almost surely, 2^1323325221 is an apocalyptic number.

It is an amenable number.

1323325221 is a deficient number, since it is larger than the sum of its proper divisors (441108411).

1323325221 is an equidigital number, since it uses as much as digits as its factorization.

1323325221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441108410.

The product of its digits is 2160, while the sum is 24.

The square root of 1323325221 is about 36377.5373135676. The cubic root of 1323325221 is about 1097.8816590054.

Adding to 1323325221 its reverse (1225233231), we get a palindrome (2548558452).

The spelling of 1323325221 in words is "one billion, three hundred twenty-three million, three hundred twenty-five thousand, two hundred twenty-one".