1321321441 has 8 divisors (see below), whose sum is σ = 1444791168. Its totient is φ = 1198410000.

The previous prime is 1321321439. The next prime is 1321321453. The reversal of 1321321441 is 1441231231.

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

It is a cyclic number.

It is not a de Polignac number, because 1321321441 - 2¹ = 1321321439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321321741) 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, 134610 + ... + 144091.

It is an arithmetic number, because the mean of its divisors is an integer number (180598896).

Almost surely, 2^1321321441 is an apocalyptic number.

1321321441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1321321441 is a deficient number, since it is larger than the sum of its proper divisors (123469727).

1321321441 is a wasteful number, since it uses less digits than its factorization.

1321321441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279143.

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

The square root of 1321321441 is about 36349.9854332846. The cubic root of 1321321441 is about 1097.3272413458.

Adding to 1321321441 its reverse (1441231231), we get a palindrome (2762552672).

The spelling of 1321321441 in words is "one billion, three hundred twenty-one million, three hundred twenty-one thousand, four hundred forty-one".