13052221 has 16 divisors (see below), whose sum is σ = 16912000. Its totient is φ = 9782208.

The previous prime is 13052191. The next prime is 13052261. The reversal of 13052221 is 12225031.

13052221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13052221 - 2⁷ = 13052093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13052195 and 13052204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13052261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2046 + ... + 5503.

It is an arithmetic number, because the mean of its divisors is an integer number (1057000).

Almost surely, 2^13052221 is an apocalyptic number.

It is an amenable number.

13052221 is a deficient number, since it is larger than the sum of its proper divisors (3859779).

13052221 is a wasteful number, since it uses less digits than its factorization.

13052221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7588.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 13052221 is about 3612.7857672439. The cubic root of 13052221 is about 235.4478918493.

Adding to 13052221 its reverse (12225031), we get a palindrome (25277252).

The spelling of 13052221 in words is "thirteen million, fifty-two thousand, two hundred twenty-one".