2001210201 has 12 divisors (see below), whose sum is σ = 2920438612. Its totient is φ = 1320385536.

The previous prime is 2001210187. The next prime is 2001210223. The reversal of 2001210201 is 1020121002.

It can be written as a sum of positive squares in 2 ways, for example, as 1571726025 + 429484176 = 39645^2 + 20724^2 .

It is not a de Polignac number, because 2001210201 - 2⁷ = 2001210073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2001210241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1145296 + ... + 1147041.

Almost surely, 2^2001210201 is an apocalyptic number.

It is an amenable number.

2001210201 is a deficient number, since it is larger than the sum of its proper divisors (919228411).

2001210201 is a wasteful number, since it uses less digits than its factorization.

2001210201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292440 (or 2292437 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2001210201 is about 44734.8879623052. The cubic root of 2001210201 is about 1260.1751249405.

Adding to 2001210201 its reverse (1020121002), we get a palindrome (3021331203).

The spelling of 2001210201 in words is "two billion, one million, two hundred ten thousand, two hundred one".