13312200221 has 4 divisors (see below), whose sum is σ = 13312431132. Its totient is φ = 13311969312.

The previous prime is 13312200197. The next prime is 13312200233. The reversal of 13312200221 is 12200221331.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6358308121 + 6953892100 = 79739^2 + 83390^2 .

It is a cyclic number.

It is not a de Polignac number, because 13312200221 - 2⁶ = 13312200157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13312200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312200271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51425 + ... + 171081.

It is an arithmetic number, because the mean of its divisors is an integer number (3328107783).

Almost surely, 2^13312200221 is an apocalyptic number.

It is an amenable number.

13312200221 is a deficient number, since it is larger than the sum of its proper divisors (230911).

13312200221 is a wasteful number, since it uses less digits than its factorization.

13312200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230910.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13312200221 its reverse (12200221331), we get a palindrome (25512421552).

The spelling of 13312200221 in words is "thirteen billion, three hundred twelve million, two hundred thousand, two hundred twenty-one".