13333121 has 2 divisors, whose sum is σ = 13333122. Its totient is φ = 13333120.

The previous prime is 13333097. The next prime is 13333147. The reversal of 13333121 is 12133331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13249600 + 83521 = 3640^2 + 289^2 .

It is a cyclic number.

It is not a de Polignac number, because 13333121 - 2⁶ = 13333057 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 13333121.

It is not a weakly prime, because it can be changed into another prime (13333171) 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 as a sum of consecutive naturals, namely, 6666560 + 6666561.

It is an arithmetic number, because the mean of its divisors is an integer number (6666561).

Almost surely, 2^13333121 is an apocalyptic number.

It is an amenable number.

13333121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13333121 is an equidigital number, since it uses as much as digits as its factorization.

13333121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162, while the sum is 17.

The square root of 13333121 is about 3651.4546416463. The cubic root of 13333121 is about 237.1249615476.

Adding to 13333121 its reverse (12133331), we get a palindrome (25466452).

The spelling of 13333121 in words is "thirteen million, three hundred thirty-three thousand, one hundred twenty-one".