1321441321 has 8 divisors (see below), whose sum is σ = 1326600000. Its totient is φ = 1316293680.

The previous prime is 1321441307. The next prime is 1321441327. The reversal of 1321441321 is 1231441231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321441321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321441292 and 1321441301.

It is not an unprimeable number, because it can be changed into a prime (1321441327) 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, 296691 + ... + 301111.

It is an arithmetic number, because the mean of its divisors is an integer number (165825000).

Almost surely, 2^1321441321 is an apocalyptic number.

It is an amenable number.

1321441321 is a deficient number, since it is larger than the sum of its proper divisors (5158679).

1321441321 is an equidigital number, since it uses as much as digits as its factorization.

1321441321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5519.

The product of its digits is 576, while the sum is 22.

The square root of 1321441321 is about 36351.6343649085. The cubic root of 1321441321 is about 1097.3604262084.

Adding to 1321441321 its reverse (1231441231), we get a palindrome (2552882552).

The spelling of 1321441321 in words is "one billion, three hundred twenty-one million, four hundred forty-one thousand, three hundred twenty-one".