120102209 has 2 divisors, whose sum is σ = 120102210. Its totient is φ = 120102208.

The previous prime is 120102181. The next prime is 120102239. The reversal of 120102209 is 902201021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119683600 + 418609 = 10940^2 + 647^2 .

It is an emirp because it is prime and its reverse (902201021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120102209 - 2⁸ = 120101953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120102239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60051104 + 60051105.

It is an arithmetic number, because the mean of its divisors is an integer number (60051105).

Almost surely, 2^120102209 is an apocalyptic number.

It is an amenable number.

120102209 is a deficient number, since it is larger than the sum of its proper divisors (1).

120102209 is an equidigital number, since it uses as much as digits as its factorization.

120102209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 120102209 is about 10959.1153383838. The cubic root of 120102209 is about 493.3824134982.

The spelling of 120102209 in words is "one hundred twenty million, one hundred two thousand, two hundred nine".