2001024001 has 4 divisors (see below), whose sum is σ = 2018732292. Its totient is φ = 1983315712.

The previous prime is 2001023971. The next prime is 2001024043. The reversal of 2001024001 is 1004201002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 981882225 + 1019141776 = 31335^2 + 31924^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001024001 - 2⁷ = 2001023873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001024061) 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 3 ways as a sum of consecutive naturals, for example, 8853976 + ... + 8854201.

It is an arithmetic number, because the mean of its divisors is an integer number (504683073).

Almost surely, 2^2001024001 is an apocalyptic number.

It is an amenable number.

2001024001 is a deficient number, since it is larger than the sum of its proper divisors (17708291).

2001024001 is a wasteful number, since it uses less digits than its factorization.

2001024001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17708290.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2001024001 is about 44732.8067641636. The cubic root of 2001024001 is about 1260.1360399432.

Adding to 2001024001 its reverse (1004201002), we get a palindrome (3005225003).

It can be divided in two parts, 200 and 1024001, that added together give a palindrome (1024201).

The spelling of 2001024001 in words is "two billion, one million, twenty-four thousand, one".