120170217 has 4 divisors (see below), whose sum is σ = 160226960. Its totient is φ = 80113476.

The previous prime is 120170159. The next prime is 120170227. The reversal of 120170217 is 712071021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 712071021 = 3 ⋅237357007.

It is not a de Polignac number, because 120170217 - 2¹⁰ = 120169193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120170193 and 120170202.

It is not an unprimeable number, because it can be changed into a prime (120170227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20028367 + ... + 20028372.

It is an arithmetic number, because the mean of its divisors is an integer number (40056740).

Almost surely, 2^120170217 is an apocalyptic number.

It is an amenable number.

120170217 is a deficient number, since it is larger than the sum of its proper divisors (40056743).

120170217 is an equidigital number, since it uses as much as digits as its factorization.

120170217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40056742.

The product of its (nonzero) digits is 196, while the sum is 21.

The square root of 120170217 is about 10962.2177044611. The cubic root of 120170217 is about 493.4755220267.

The spelling of 120170217 in words is "one hundred twenty million, one hundred seventy thousand, two hundred seventeen".