120211009 has 2 divisors, whose sum is σ = 120211010. Its totient is φ = 120211008.

The previous prime is 120210983. The next prime is 120211019. The reversal of 120211009 is 900112021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105001009 + 15210000 = 10247^2 + 3900^2 .

It is a cyclic number.

It is not a de Polignac number, because 120211009 - 2¹¹ = 120208961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120210983 and 120211001.

It is not a weakly prime, because it can be changed into another prime (120211019) 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, 60105504 + 60105505.

It is an arithmetic number, because the mean of its divisors is an integer number (60105505).

Almost surely, 2^120211009 is an apocalyptic number.

It is an amenable number.

120211009 is a deficient number, since it is larger than the sum of its proper divisors (1).

120211009 is an equidigital number, since it uses as much as digits as its factorization.

120211009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 120211009 is about 10964.0781190212. The cubic root of 120211009 is about 493.5313527662.

The spelling of 120211009 in words is "one hundred twenty million, two hundred eleven thousand, nine".