13336021 has 8 divisors (see below), whose sum is σ = 14292864. Its totient is φ = 12410640.

The previous prime is 13335997. The next prime is 13336031. The reversal of 13336021 is 12063331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13336021 - 2⁵ = 13335989 is a prime.

It is a super-2 number, since 2×13336021² = 355698912224882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13336021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13336031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6985 + ... + 8686.

It is an arithmetic number, because the mean of its divisors is an integer number (1786608).

Almost surely, 2^13336021 is an apocalyptic number.

It is an amenable number.

13336021 is a deficient number, since it is larger than the sum of its proper divisors (956843).

13336021 is a wasteful number, since it uses less digits than its factorization.

13336021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15731.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 13336021 is about 3651.8517220720. The cubic root of 13336021 is about 237.1421521349.

Adding to 13336021 its reverse (12063331), we get a palindrome (25399352).

The spelling of 13336021 in words is "thirteen million, three hundred thirty-six thousand, twenty-one".