210002001 has 16 divisors (see below), whose sum is σ = 305788608. Its totient is φ = 127136000.

The previous prime is 210001951. The next prime is 210002069. The reversal of 210002001 is 100200012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 210002001 - 2⁷ = 210001873 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (210004001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33301 + ... + 39101.

It is an arithmetic number, because the mean of its divisors is an integer number (19111788).

Almost surely, 2^210002001 is an apocalyptic number.

It is an amenable number.

210002001 is a deficient number, since it is larger than the sum of its proper divisors (95786607).

210002001 is a wasteful number, since it uses less digits than its factorization.

210002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6912.

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 210002001 is about 14491.4457870842. The cubic root of 210002001 is about 594.3940831731.

Adding to 210002001 its reverse (100200012), we get a palindrome (310202013).

The spelling of 210002001 in words is "two hundred ten million, two thousand, one".