17068213507221 has 16 divisors (see below), whose sum is σ = 26101927467520. Its totient is φ = 11011750649280.

The previous prime is 17068213507207. The next prime is 17068213507229. The reversal of 17068213507221 is 12270531286071.

17068213507221 is a `hidden beast` number, since 1 + 70 + 6 + 8 + 2 + 1 + 350 + 7 + 221 = 666.

It is not a de Polignac number, because 17068213507221 - 2¹¹ = 17068213505173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17068213507229) 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 in 15 ways as a sum of consecutive naturals, for example, 10196064580 + ... + 10196066253.

It is an arithmetic number, because the mean of its divisors is an integer number (1631370466720).

Almost surely, 2^{17068213507221} is an apocalyptic number.

It is an amenable number.

17068213507221 is a deficient number, since it is larger than the sum of its proper divisors (9033713960299).

17068213507221 is a wasteful number, since it uses less digits than its factorization.

17068213507221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20392130873 (or 20392130867 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 17068213507221 in words is "seventeen trillion, sixty-eight billion, two hundred thirteen million, five hundred seven thousand, two hundred twenty-one".