13090021 has 8 divisors (see below), whose sum is σ = 15036800. Its totient is φ = 11162448.

The previous prime is 13090019. The next prime is 13090027. The reversal of 13090021 is 12009031.

13090021 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 13090021 - 2¹ = 13090019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13089977 and 13090004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13090027) 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, 3306 + ... + 6091.

It is an arithmetic number, because the mean of its divisors is an integer number (1879600).

Almost surely, 2^13090021 is an apocalyptic number.

It is an amenable number.

13090021 is a deficient number, since it is larger than the sum of its proper divisors (1946779).

13090021 is an equidigital number, since it uses as much as digits as its factorization.

13090021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9603.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 13090021 is about 3618.0134051714. The cubic root of 13090021 is about 235.6749631024.

Adding to 13090021 its reverse (12009031), we get a palindrome (25099052).

The spelling of 13090021 in words is "thirteen million, ninety thousand, twenty-one".