13204361221 has 8 divisors (see below), whose sum is σ = 13271162688. Its totient is φ = 13137600000.

The previous prime is 13204361207. The next prime is 13204361293. The reversal of 13204361221 is 12216340231.

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 13204361221 - 2⁵ = 13204361189 is a prime.

It is a super-2 number, since 2×13204361221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13204367221) 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 7 ways as a sum of consecutive naturals, for example, 817221 + ... + 833221.

It is an arithmetic number, because the mean of its divisors is an integer number (1658895336).

Almost surely, 2^13204361221 is an apocalyptic number.

It is an amenable number.

13204361221 is a deficient number, since it is larger than the sum of its proper divisors (66801467).

13204361221 is a wasteful number, since it uses less digits than its factorization.

13204361221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20123.

The product of its (nonzero) digits is 1728, while the sum is 25.

The spelling of 13204361221 in words is "thirteen billion, two hundred four million, three hundred sixty-one thousand, two hundred twenty-one".