11533321 has 2 divisors, whose sum is σ = 11533322. Its totient is φ = 11533320.

The previous prime is 11533297. The next prime is 11533351. The reversal of 11533321 is 12333511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11148921 + 384400 = 3339^2 + 620^2 .

It is an emirp because it is prime and its reverse (12333511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11533321 - 2⁹ = 11532809 is a prime.

It is not a weakly prime, because it can be changed into another prime (11533351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5766660 + 5766661.

It is an arithmetic number, because the mean of its divisors is an integer number (5766661).

Almost surely, 2^11533321 is an apocalyptic number.

It is an amenable number.

11533321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11533321 is an equidigital number, since it uses as much as digits as its factorization.

11533321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270, while the sum is 19.

The square root of 11533321 is about 3396.0743513651. The cubic root of 11533321 is about 225.9356657667.

Adding to 11533321 its reverse (12333511), we get a palindrome (23866832).

The spelling of 11533321 in words is "eleven million, five hundred thirty-three thousand, three hundred twenty-one".