120216317 has 4 divisors (see below), whose sum is σ = 129463740. Its totient is φ = 110968896.

The previous prime is 120216307. The next prime is 120216323. The reversal of 120216317 is 713612021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 713612021 = 59 ⋅12095119.

It can be written as a sum of positive squares in 2 ways, for example, as 56040196 + 64176121 = 7486^2 + 8011^2 .

It is a cyclic number.

It is not a de Polignac number, because 120216317 - 2⁶ = 120216253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120216292 and 120216301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120216307) 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 in 3 ways as a sum of consecutive naturals, for example, 4623692 + ... + 4623717.

It is an arithmetic number, because the mean of its divisors is an integer number (32365935).

Almost surely, 2^120216317 is an apocalyptic number.

It is an amenable number.

120216317 is a deficient number, since it is larger than the sum of its proper divisors (9247423).

120216317 is an equidigital number, since it uses as much as digits as its factorization.

120216317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9247422.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 120216317 is about 10964.3201795643. The cubic root of 120216317 is about 493.5386167317.

Adding to 120216317 its reverse (713612021), we get a palindrome (833828338).

The spelling of 120216317 in words is "one hundred twenty million, two hundred sixteen thousand, three hundred seventeen".