2001210001 has 8 divisors (see below), whose sum is σ = 2289700224. Its totient is φ = 1713370560.

The previous prime is 2001209983. The next prime is 2001210011. The reversal of 2001210001 is 1000121002.

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 2001210001 - 2⁹ = 2001209489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is not an unprimeable number, because it can be changed into a prime (2001210011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156085 + ... + 168418.

It is an arithmetic number, because the mean of its divisors is an integer number (286212528).

Almost surely, 2^2001210001 is an apocalyptic number.

It is an amenable number.

2001210001 is a deficient number, since it is larger than the sum of its proper divisors (288490223).

2001210001 is an equidigital number, since it uses as much as digits as its factorization.

2001210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325391.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 2001210001 is about 44734.8857269134. The cubic root of 2001210001 is about 1260.1750829601.

Adding to 2001210001 its reverse (1000121002), we get a palindrome (3001331003).

The spelling of 2001210001 in words is "two billion, one million, two hundred ten thousand, one".