13221002318 has 8 divisors (see below), whose sum is σ = 19832262912. Its totient is φ = 6610248016.

The previous prime is 13221002317. The next prime is 13221002329. The reversal of 13221002318 is 81320012231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13221002318² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13221002293 and 13221002302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221002317) 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, 52655 + ... + 170922.

It is an arithmetic number, because the mean of its divisors is an integer number (2479032864).

Almost surely, 2^13221002318 is an apocalyptic number.

13221002318 is a deficient number, since it is larger than the sum of its proper divisors (6611260594).

13221002318 is a wasteful number, since it uses less digits than its factorization.

13221002318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253146.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 13221002318 its reverse (81320012231), we get a palindrome (94541014549).

The spelling of 13221002318 in words is "thirteen billion, two hundred twenty-one million, two thousand, three hundred eighteen".