13221002322 has 108 divisors (see below), whose sum is σ = 32106523722. Its totient is φ = 3928953600.

The previous prime is 13221002317. The next prime is 13221002329. The reversal of 13221002322 is 22320012231.

13221002322 is a `hidden beast` number, since 132 + 210 + 0 + 2 + 322 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 13089876921 + 131125401 = 114411^2 + 11451^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13221002295 and 13221002304.

It is not an unprimeable number, because it can be changed into a prime (13221002329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 6116922 + ... + 6119082.

Almost surely, 2^13221002322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13221002322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16053261861).

13221002322 is an abundant number, since it is smaller than the sum of its proper divisors (18885521400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13221002322 is a wasteful number, since it uses less digits than its factorization.

13221002322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297 (or 2230 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 13221002322 its reverse (22320012231), we get a palindrome (35541014553).

Subtracting 13221002322 from its reverse (22320012231), we obtain a palindrome (9099009909).

The spelling of 13221002322 in words is "thirteen billion, two hundred twenty-one million, two thousand, three hundred twenty-two".