19122010209959 has 2 divisors, whose sum is σ = 19122010209960. Its totient is φ = 19122010209958.

The previous prime is 19122010209947. The next prime is 19122010210067. The reversal of 19122010209959 is 95990201022191.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19122010209959 - 2³⁶ = 19053290733223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19122010209059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9561005104979 + 9561005104980.

It is an arithmetic number, because the mean of its divisors is an integer number (9561005104980).

Almost surely, 2^{19122010209959} is an apocalyptic number.

19122010209959 is a deficient number, since it is larger than the sum of its proper divisors (1).

19122010209959 is an equidigital number, since it uses as much as digits as its factorization.

19122010209959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 262440, while the sum is 50.

The spelling of 19122010209959 in words is "nineteen trillion, one hundred twenty-two billion, ten million, two hundred nine thousand, nine hundred fifty-nine".