13220999819 has 2 divisors, whose sum is σ = 13220999820. Its totient is φ = 13220999818.

The previous prime is 13220999809. The next prime is 13220999821. The reversal of 13220999819 is 91899902231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13220999819 is a prime.

It is a super-2 number, since 2×13220999819² (a number of 21 digits) contains 22 as substring.

Together with 13220999821, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13220999809) 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 as a sum of consecutive naturals, namely, 6610499909 + 6610499910.

It is an arithmetic number, because the mean of its divisors is an integer number (6610499910).

Almost surely, 2^13220999819 is an apocalyptic number.

13220999819 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220999819 is an equidigital number, since it uses as much as digits as its factorization.

13220999819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 629856, while the sum is 53.

The spelling of 13220999819 in words is "thirteen billion, two hundred twenty million, nine hundred ninety-nine thousand, eight hundred nineteen".