13159021 has 4 divisors (see below), whose sum is σ = 13175200. Its totient is φ = 13142844.

The previous prime is 13159019. The next prime is 13159031. The reversal of 13159021 is 12095131.

13159021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12095131 = 773 ⋅15647.

It is a cyclic number.

It is not a de Polignac number, because 13159021 - 2¹ = 13159019 is a prime.

It is a super-3 number, since 3×13159021³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13158983 and 13159001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13159031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6801 + ... + 8518.

It is an arithmetic number, because the mean of its divisors is an integer number (3293800).

Almost surely, 2^13159021 is an apocalyptic number.

It is an amenable number.

13159021 is a deficient number, since it is larger than the sum of its proper divisors (16179).

13159021 is an equidigital number, since it uses as much as digits as its factorization.

13159021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16178.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 13159021 is about 3627.5364918909. The cubic root of 13159021 is about 236.0883335423.

The spelling of 13159021 in words is "thirteen million, one hundred fifty-nine thousand, twenty-one".