210011002009 has 2 divisors, whose sum is σ = 210011002010. Its totient is φ = 210011002008.

The previous prime is 210011001983. The next prime is 210011002049. The reversal of 210011002009 is 900200110012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206709350409 + 3301651600 = 454653^2 + 57460^2 .

It is a cyclic number.

It is not a de Polignac number, because 210011002009 - 2²⁵ = 209977447577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210011001983 and 210011002001.

It is not a weakly prime, because it can be changed into another prime (210011002049) 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, 105005501004 + 105005501005.

It is an arithmetic number, because the mean of its divisors is an integer number (105005501005).

Almost surely, 2^210011002009 is an apocalyptic number.

It is an amenable number.

210011002009 is a deficient number, since it is larger than the sum of its proper divisors (1).

210011002009 is an equidigital number, since it uses as much as digits as its factorization.

210011002009 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 spelling of 210011002009 in words is "two hundred ten billion, eleven million, two thousand, nine".