1321222324 has 6 divisors (see below), whose sum is σ = 2312139074. Its totient is φ = 660611160.

The previous prime is 1321222321. The next prime is 1321222349. The reversal of 1321222324 is 4232221231.

It can be written as a sum of positive squares in only one way, i.e., 1094418724 + 226803600 = 33082^2 + 15060^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1321222295 and 1321222304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321222321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165152787 + ... + 165152794.

Almost surely, 2^1321222324 is an apocalyptic number.

It is an amenable number.

1321222324 is a deficient number, since it is larger than the sum of its proper divisors (990916750).

1321222324 is a wasteful number, since it uses less digits than its factorization.

1321222324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330305585 (or 330305583 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 1321222324 is about 36348.6220371557. The cubic root of 1321222324 is about 1097.2998025257.

Adding to 1321222324 its reverse (4232221231), we get a palindrome (5553443555).

The spelling of 1321222324 in words is "one billion, three hundred twenty-one million, two hundred twenty-two thousand, three hundred twenty-four".