120122217 has 16 divisors (see below), whose sum is σ = 178509760. Its totient is φ = 79833600.

The previous prime is 120122209. The next prime is 120122227. The reversal of 120122217 is 712221021.

It is a happy number.

It is not a de Polignac number, because 120122217 - 2³ = 120122209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120122217.

It is not an unprimeable number, because it can be changed into a prime (120122227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2217 + ... + 15657.

It is an arithmetic number, because the mean of its divisors is an integer number (11156860).

Almost surely, 2^120122217 is an apocalyptic number.

It is an amenable number.

120122217 is a deficient number, since it is larger than the sum of its proper divisors (58387543).

120122217 is a wasteful number, since it uses less digits than its factorization.

120122217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13781 (or 13775 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 120122217 is about 10960.0281477741. The cubic root of 120122217 is about 493.4098097393.

Adding to 120122217 its reverse (712221021), we get a palindrome (832343238).

The spelling of 120122217 in words is "one hundred twenty million, one hundred twenty-two thousand, two hundred seventeen".