1324121321 has 4 divisors (see below), whose sum is σ = 1366834944. Its totient is φ = 1281407700.

The previous prime is 1324121299. The next prime is 1324121329. The reversal of 1324121321 is 1231214231.

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 not a de Polignac number, because 1324121321 - 2¹⁴ = 1324104937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1324121293 and 1324121302.

It is not an unprimeable number, because it can be changed into a prime (1324121329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21356765 + ... + 21356826.

It is an arithmetic number, because the mean of its divisors is an integer number (341708736).

Almost surely, 2^1324121321 is an apocalyptic number.

It is an amenable number.

1324121321 is a deficient number, since it is larger than the sum of its proper divisors (42713623).

1324121321 is an equidigital number, since it uses as much as digits as its factorization.

1324121321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42713622.

The product of its digits is 288, while the sum is 20.

The square root of 1324121321 is about 36388.4778604437. The cubic root of 1324121321 is about 1098.1017732966.

Adding to 1324121321 its reverse (1231214231), we get a palindrome (2555335552).

The spelling of 1324121321 in words is "one billion, three hundred twenty-four million, one hundred twenty-one thousand, three hundred twenty-one".