13204324221 has 16 divisors (see below), whose sum is σ = 19212469248. Its totient is φ = 8000046000.

The previous prime is 13204324213. The next prime is 13204324261. The reversal of 13204324221 is 12242340231.

It is a happy number.

It is not a de Polignac number, because 13204324221 - 2³ = 13204324213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13204324191 and 13204324200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13204324261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42396 + ... + 167946.

It is an arithmetic number, because the mean of its divisors is an integer number (1200779328).

Almost surely, 2^13204324221 is an apocalyptic number.

13204324221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13204324221 is a deficient number, since it is larger than the sum of its proper divisors (6008145027).

13204324221 is a wasteful number, since it uses less digits than its factorization.

13204324221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128752.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 13204324221 its reverse (12242340231), we get a palindrome (25446664452).

The spelling of 13204324221 in words is "thirteen billion, two hundred four million, three hundred twenty-four thousand, two hundred twenty-one".