1323222321 has 16 divisors (see below), whose sum is σ = 1823897088. Its totient is φ = 852432000.

The previous prime is 1323222317. The next prime is 1323222337. The reversal of 1323222321 is 1232223231.

It is a happy number.

It is not a de Polignac number, because 1323222321 - 2² = 1323222317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1323222371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55045 + ... + 75341.

It is an arithmetic number, because the mean of its divisors is an integer number (113993568).

Almost surely, 2^1323222321 is an apocalyptic number.

It is an amenable number.

1323222321 is a deficient number, since it is larger than the sum of its proper divisors (500674767).

1323222321 is a wasteful number, since it uses less digits than its factorization.

1323222321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21032.

The product of its digits is 864, while the sum is 21.

The square root of 1323222321 is about 36376.1229517385. The cubic root of 1323222321 is about 1097.8532016644.

Adding to 1323222321 its reverse (1232223231), we get a palindrome (2555445552).

It can be divided in two parts, 13232 and 22321, that added together give a palindrome (35553).

The spelling of 1323222321 in words is "one billion, three hundred twenty-three million, two hundred twenty-two thousand, three hundred twenty-one".