1323344221 has 16 divisors (see below), whose sum is σ = 1386367488. Its totient is φ = 1262142000.

The previous prime is 1323344203. The next prime is 1323344233. The reversal of 1323344221 is 1224433231.

It is a cyclic number.

It is not a de Polignac number, because 1323344221 - 2²¹ = 1321247069 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 (1323344291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324646 + ... + 328696.

It is an arithmetic number, because the mean of its divisors is an integer number (86647968).

Almost surely, 2^1323344221 is an apocalyptic number.

It is an amenable number.

1323344221 is a deficient number, since it is larger than the sum of its proper divisors (63023267).

1323344221 is a wasteful number, since it uses less digits than its factorization.

1323344221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4272.

The product of its digits is 3456, while the sum is 25.

The square root of 1323344221 is about 36377.7984627987. The cubic root of 1323344221 is about 1097.8869133579.

Adding to 1323344221 its reverse (1224433231), we get a palindrome (2547777452).

The spelling of 1323344221 in words is "one billion, three hundred twenty-three million, three hundred forty-four thousand, two hundred twenty-one".