120388217 has 2 divisors, whose sum is σ = 120388218. Its totient is φ = 120388216.

The previous prime is 120388201. The next prime is 120388297. The reversal of 120388217 is 712883021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108388921 + 11999296 = 10411^2 + 3464^2 .

It is a cyclic number.

It is not a de Polignac number, because 120388217 - 2⁴ = 120388201 is a prime.

It is not a weakly prime, because it can be changed into another prime (120388297) 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 as a sum of consecutive naturals, namely, 60194108 + 60194109.

It is an arithmetic number, because the mean of its divisors is an integer number (60194109).

Almost surely, 2^120388217 is an apocalyptic number.

It is an amenable number.

120388217 is a deficient number, since it is larger than the sum of its proper divisors (1).

120388217 is an equidigital number, since it uses as much as digits as its factorization.

120388217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 120388217 is about 10972.1564425595. The cubic root of 120388217 is about 493.7737453303.

The spelling of 120388217 in words is "one hundred twenty million, three hundred eighty-eight thousand, two hundred seventeen".