517017222121 has 16 divisors (see below), whose sum is σ = 526681442560. Its totient is φ = 507433455360.

The previous prime is 517017222077. The next prime is 517017222181. The reversal of 517017222121 is 121222710715.

It is a cyclic number.

It is not a de Polignac number, because 517017222121 - 2¹³ = 517017213929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (517017222181) 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, 40502686 + ... + 40515448.

It is an arithmetic number, because the mean of its divisors is an integer number (32917590160).

Almost surely, 2^517017222121 is an apocalyptic number.

It is an amenable number.

517017222121 is a deficient number, since it is larger than the sum of its proper divisors (9664220439).

517017222121 is a wasteful number, since it uses less digits than its factorization.

517017222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15856.

The product of its (nonzero) digits is 3920, while the sum is 31.

Adding to 517017222121 its reverse (121222710715), we get a palindrome (638239932836).

The spelling of 517017222121 in words is "five hundred seventeen billion, seventeen million, two hundred twenty-two thousand, one hundred twenty-one".