13321001 has 4 divisors (see below), whose sum is σ = 13395600. Its totient is φ = 13246404.

The previous prime is 13320977. The next prime is 13321003. The reversal of 13321001 is 10012331.

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 a de Polignac number, because none of the positive numbers 2^k-13321001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13321003) 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 in 3 ways as a sum of consecutive naturals, for example, 37031 + ... + 37388.

It is an arithmetic number, because the mean of its divisors is an integer number (3348900).

Almost surely, 2^13321001 is an apocalyptic number.

It is an amenable number.

13321001 is a deficient number, since it is larger than the sum of its proper divisors (74599).

13321001 is an equidigital number, since it uses as much as digits as its factorization.

13321001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74598.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 13321001 is about 3649.7946517578. The cubic root of 13321001 is about 237.0530897582.

Adding to 13321001 its reverse (10012331), we get a palindrome (23333332).

The spelling of 13321001 in words is "thirteen million, three hundred twenty-one thousand, one".