120200209 has 2 divisors, whose sum is σ = 120200210. Its totient is φ = 120200208.

The previous prime is 120200191. The next prime is 120200219. The reversal of 120200209 is 902002021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115777600 + 4422609 = 10760^2 + 2103^2 .

It is a cyclic number.

It is not a de Polignac number, because 120200209 - 2¹⁷ = 120069137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120200192 and 120200201.

It is not a weakly prime, because it can be changed into another prime (120200219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60100104 + 60100105.

It is an arithmetic number, because the mean of its divisors is an integer number (60100105).

Almost surely, 2^120200209 is an apocalyptic number.

It is an amenable number.

120200209 is a deficient number, since it is larger than the sum of its proper divisors (1).

120200209 is an equidigital number, since it uses as much as digits as its factorization.

120200209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 120200209 is about 10963.5855904900. The cubic root of 120200209 is about 493.5165723721.

It can be divided in two parts, 120200 and 209, that added together give a square (120409 = 347²).

The spelling of 120200209 in words is "one hundred twenty million, two hundred thousand, two hundred nine".