1323323221 has 8 divisors (see below), whose sum is σ = 1451107584. Its totient is φ = 1196785920.

The previous prime is 1323323219. The next prime is 1323323227. The reversal of 1323323221 is 1223233231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1323323221 - 2¹ = 1323323219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323323192 and 1323323201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323323227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309541 + ... + 313786.

It is an arithmetic number, because the mean of its divisors is an integer number (181388448).

Almost surely, 2^1323323221 is an apocalyptic number.

1323323221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1323323221 is a deficient number, since it is larger than the sum of its proper divisors (127784363).

1323323221 is a wasteful number, since it uses less digits than its factorization.

1323323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623531.

The product of its digits is 1296, while the sum is 22.

The square root of 1323323221 is about 36377.5098240657. The cubic root of 1323323221 is about 1097.8811059127.

Adding to 1323323221 its reverse (1223233231), we get a palindrome (2546556452).

The spelling of 1323323221 in words is "one billion, three hundred twenty-three million, three hundred twenty-three thousand, two hundred twenty-one".