13220422113421 has 2 divisors, whose sum is σ = 13220422113422. Its totient is φ = 13220422113420.

The previous prime is 13220422113389. The next prime is 13220422113541. The reversal of 13220422113421 is 12431122402231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12967820379396 + 252601734025 = 3601086^2 + 502595^2 .

It is a cyclic number.

It is not a de Polignac number, because 13220422113421 - 2⁵ = 13220422113389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13220422113421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13220422113121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610211056710 + 6610211056711.

It is an arithmetic number, because the mean of its divisors is an integer number (6610211056711).

Almost surely, 2^{13220422113421} is an apocalyptic number.

It is an amenable number.

13220422113421 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220422113421 is an equidigital number, since it uses as much as digits as its factorization.

13220422113421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 13220422113421 its reverse (12431122402231), we get a palindrome (25651544515652).

The spelling of 13220422113421 in words is "thirteen trillion, two hundred twenty billion, four hundred twenty-two million, one hundred thirteen thousand, four hundred twenty-one".