13010221 has 4 divisors (see below), whose sum is σ = 14868832. Its totient is φ = 11151612.

The previous prime is 13010213. The next prime is 13010293. The reversal of 13010221 is 12201031.

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: 12201031 = 599 ⋅20369.

It is a cyclic number.

It is not a de Polignac number, because 13010221 - 2³ = 13010213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13010198 and 13010207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13019221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 929295 + ... + 929308.

It is an arithmetic number, because the mean of its divisors is an integer number (3717208).

Almost surely, 2^13010221 is an apocalyptic number.

It is an amenable number.

13010221 is a deficient number, since it is larger than the sum of its proper divisors (1858611).

13010221 is an equidigital number, since it uses as much as digits as its factorization.

13010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858610.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 13010221 is about 3606.9683946494. The cubic root of 13010221 is about 235.1950756852.

Adding to 13010221 its reverse (12201031), we get a palindrome (25211252).

It can be divided in two parts, 13010 and 221, that added together give a palindrome (13231).

The spelling of 13010221 in words is "thirteen million, ten thousand, two hundred twenty-one".