210011009 has 8 divisors (see below), whose sum is σ = 238069440. Its totient is φ = 183653136.

The previous prime is 210010991. The next prime is 210011029. The reversal of 210011009 is 900110012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210011009 - 2¹⁶ = 209945473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 210010984 and 210011002.

It is not an unprimeable number, because it can be changed into a prime (210011029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424877 + ... + 425370.

It is an arithmetic number, because the mean of its divisors is an integer number (29758680).

Almost surely, 2^210011009 is an apocalyptic number.

It is an amenable number.

210011009 is a deficient number, since it is larger than the sum of its proper divisors (28058431).

210011009 is a wasteful number, since it uses less digits than its factorization.

210011009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850279.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 210011009 is about 14491.7565877985. The cubic root of 210011009 is about 594.4025818626.

The spelling of 210011009 in words is "two hundred ten million, eleven thousand, nine".