13004323221 has 16 divisors (see below), whose sum is σ = 17492112000. Its totient is φ = 8593370688.

The previous prime is 13004323201. The next prime is 13004323223. The reversal of 13004323221 is 12232340031.

13004323221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13004323221 - 2¹⁴ = 13004306837 is a prime.

It is a super-2 number, since 2×13004323221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13004323223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118080 + ... + 199878.

It is an arithmetic number, because the mean of its divisors is an integer number (1093257000).

Almost surely, 2^13004323221 is an apocalyptic number.

It is an amenable number.

13004323221 is a deficient number, since it is larger than the sum of its proper divisors (4487788779).

13004323221 is a wasteful number, since it uses less digits than its factorization.

13004323221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82268.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 13004323221 its reverse (12232340031), we get a palindrome (25236663252).

The spelling of 13004323221 in words is "thirteen billion, four million, three hundred twenty-three thousand, two hundred twenty-one".