210201009 has 8 divisors (see below), whose sum is σ = 295019040. Its totient is φ = 132758496.

The previous prime is 210200989. The next prime is 210201023. The reversal of 210201009 is 900102012.

It is a happy number.

210201009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 210201009 - 2¹⁹ = 209676721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210201029) 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, 1843812 + ... + 1843925.

It is an arithmetic number, because the mean of its divisors is an integer number (36877380).

Almost surely, 2^210201009 is an apocalyptic number.

It is an amenable number.

210201009 is a deficient number, since it is larger than the sum of its proper divisors (84818031).

210201009 is a wasteful number, since it uses less digits than its factorization.

210201009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3687759.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 210201009 is about 14498.3105567511. The cubic root of 210201009 is about 594.5817827050.

The spelling of 210201009 in words is "two hundred ten million, two hundred one thousand, nine".