13121065 has 8 divisors (see below), whose sum is σ = 15825600. Its totient is φ = 10443312.

The previous prime is 13121047. The next prime is 13121071. The reversal of 13121065 is 56012131.

13121065 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 13121065 - 2⁵ = 13121033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5599 + ... + 7588.

It is an arithmetic number, because the mean of its divisors is an integer number (1978200).

Almost surely, 2^13121065 is an apocalyptic number.

It is an amenable number.

13121065 is a deficient number, since it is larger than the sum of its proper divisors (2704535).

13121065 is a wasteful number, since it uses less digits than its factorization.

13121065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13391.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 13121065 is about 3622.3010642408. The cubic root of 13121065 is about 235.8611231665.

Adding to 13121065 its reverse (56012131), we get a palindrome (69133196).

The spelling of 13121065 in words is "thirteen million, one hundred twenty-one thousand, sixty-five".