13335021 has 24 divisors (see below), whose sum is σ = 23310144. Its totient is φ = 7171200.

The previous prime is 13335019. The next prime is 13335037. The reversal of 13335021 is 12053331.

13335021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13335021 - 2¹ = 13335019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13334985 and 13335003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13335001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5155 + ... + 7296.

It is an arithmetic number, because the mean of its divisors is an integer number (971256).

Almost surely, 2^13335021 is an apocalyptic number.

It is an amenable number.

13335021 is a deficient number, since it is larger than the sum of its proper divisors (9975123).

13335021 is a wasteful number, since it uses less digits than its factorization.

13335021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12481 (or 12478 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 13335021 is about 3651.7148026646. The cubic root of 13335021 is about 237.1362246277.

Adding to 13335021 its reverse (12053331), we get a palindrome (25388352).

The spelling of 13335021 in words is "thirteen million, three hundred thirty-five thousand, twenty-one".