13320244201221 has 144 divisors (see below), whose sum is σ = 21341553844800. Its totient is φ = 8209966647168.

The previous prime is 13320244201169. The next prime is 13320244201273. The reversal of 13320244201221 is 12210244202331.

13320244201221 is a `hidden beast` number, since 1 + 3 + 3 + 202 + 4 + 420 + 12 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (13320244201169) and next prime (13320244201273).

It is not a de Polignac number, because 13320244201221 - 2¹⁴ = 13320244184837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13320244201021) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3069885870 + ... + 3069890208.

Almost surely, 2^{13320244201221} is an apocalyptic number.

It is an amenable number.

13320244201221 is a deficient number, since it is larger than the sum of its proper divisors (8021309643579).

13320244201221 is a wasteful number, since it uses less digits than its factorization.

13320244201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4625 (or 4559 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 13320244201221 its reverse (12210244202331), we get a palindrome (25530488403552).

The spelling of 13320244201221 in words is "thirteen trillion, three hundred twenty billion, two hundred forty-four million, two hundred one thousand, two hundred twenty-one".