12020010209 has 2 divisors, whose sum is σ = 12020010210. Its totient is φ = 12020010208.

The previous prime is 12020010187. The next prime is 12020010227. The reversal of 12020010209 is 90201002021.

12020010209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10382998609 + 1637011600 = 101897^2 + 40460^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020010209 - 2¹² = 12020006113 is a prime.

It is not a weakly prime, because it can be changed into another prime (12020010229) 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, 6010005104 + 6010005105.

It is an arithmetic number, because the mean of its divisors is an integer number (6010005105).

Almost surely, 2^12020010209 is an apocalyptic number.

It is an amenable number.

12020010209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020010209 is an equidigital number, since it uses as much as digits as its factorization.

12020010209 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 17.

The spelling of 12020010209 in words is "twelve billion, twenty million, ten thousand, two hundred nine".