13112220202321 has 2 divisors, whose sum is σ = 13112220202322. Its totient is φ = 13112220202320.

The previous prime is 13112220202303. The next prime is 13112220202343. The reversal of 13112220202321 is 12320202221131.

It is an a-pointer prime, because the next prime (13112220202343) can be obtained adding 13112220202321 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12380271510721 + 731948691600 = 3518561^2 + 855540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13112220202321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13112220202292 and 13112220202301.

It is not a weakly prime, because it can be changed into another prime (13112220206321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6556110101160 + 6556110101161.

It is an arithmetic number, because the mean of its divisors is an integer number (6556110101161).

Almost surely, 2^{13112220202321} is an apocalyptic number.

It is an amenable number.

13112220202321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13112220202321 is an equidigital number, since it uses as much as digits as its factorization.

13112220202321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 13112220202321 its reverse (12320202221131), we get a palindrome (25432422423452).

The spelling of 13112220202321 in words is "thirteen trillion, one hundred twelve billion, two hundred twenty million, two hundred two thousand, three hundred twenty-one".