11009321 has 2 divisors, whose sum is σ = 11009322. Its totient is φ = 11009320.

The previous prime is 11009293. The next prime is 11009351. The reversal of 11009321 is 12390011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8637721 + 2371600 = 2939^2 + 1540^2 .

It is an emirp because it is prime and its reverse (12390011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11009321 - 2¹⁰ = 11008297 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11009321.

It is not a weakly prime, because it can be changed into another prime (11009351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5504660 + 5504661.

It is an arithmetic number, because the mean of its divisors is an integer number (5504661).

Almost surely, 2^11009321 is an apocalyptic number.

It is an amenable number.

11009321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11009321 is an equidigital number, since it uses as much as digits as its factorization.

11009321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 11009321 is about 3318.0296864254. The cubic root of 11009321 is about 222.4608086508.

Adding to 11009321 its reverse (12390011), we get a palindrome (23399332).

The spelling of 11009321 in words is "eleven million, nine thousand, three hundred twenty-one".