13220919919 has 2 divisors, whose sum is σ = 13220919920. Its totient is φ = 13220919918.

The previous prime is 13220919913. The next prime is 13220919923. The reversal of 13220919919 is 91991902231.

13220919919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13220919919 - 2³¹ = 11073436271 is a prime.

It is a super-2 number, since 2×13220919919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13220919913) 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, 6610459959 + 6610459960.

It is an arithmetic number, because the mean of its divisors is an integer number (6610459960).

Almost surely, 2^13220919919 is an apocalyptic number.

13220919919 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220919919 is an equidigital number, since it uses as much as digits as its factorization.

13220919919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78732, while the sum is 46.

The spelling of 13220919919 in words is "thirteen billion, two hundred twenty million, nine hundred nineteen thousand, nine hundred nineteen".