13220314321 has 2 divisors, whose sum is σ = 13220314322. Its totient is φ = 13220314320.

The previous prime is 13220314319. The next prime is 13220314337. The reversal of 13220314321 is 12341302231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12328993296 + 891321025 = 111036^2 + 29855^2 .

It is a cyclic number.

It is not a de Polignac number, because 13220314321 - 2¹ = 13220314319 is a prime.

Together with 13220314319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 13220314292 and 13220314301.

It is not a weakly prime, because it can be changed into another prime (13220314351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610157160 + 6610157161.

It is an arithmetic number, because the mean of its divisors is an integer number (6610157161).

Almost surely, 2^13220314321 is an apocalyptic number.

It is an amenable number.

13220314321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220314321 is an equidigital number, since it uses as much as digits as its factorization.

13220314321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 13220314321 its reverse (12341302231), we get a palindrome (25561616552).

The spelling of 13220314321 in words is "thirteen billion, two hundred twenty million, three hundred fourteen thousand, three hundred twenty-one".