210020201009 has 2 divisors, whose sum is σ = 210020201010. Its totient is φ = 210020201008.

The previous prime is 210020200997. The next prime is 210020201077. The reversal of 210020201009 is 900102020012.

210020201009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122747224609 + 87272976400 = 350353^2 + 295420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210020201009 is a prime.

It is not a weakly prime, because it can be changed into another prime (210020201509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010100504 + 105010100505.

It is an arithmetic number, because the mean of its divisors is an integer number (105010100505).

Almost surely, 2^210020201009 is an apocalyptic number.

It is an amenable number.

210020201009 is a deficient number, since it is larger than the sum of its proper divisors (1).

210020201009 is an equidigital number, since it uses as much as digits as its factorization.

210020201009 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 210020201009 in words is "two hundred ten billion, twenty million, two hundred one thousand, nine".