2001001013 has 16 divisors (see below), whose sum is σ = 2202076800. Its totient is φ = 1803172800.

The previous prime is 2001001003. The next prime is 2001001019. The reversal of 2001001013 is 3101001002.

It is not a de Polignac number, because 2001001013 - 2¹⁰ = 2000999989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001001019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1082456 + ... + 1084302.

It is an arithmetic number, because the mean of its divisors is an integer number (137629800).

Almost surely, 2^2001001013 is an apocalyptic number.

It is an amenable number.

2001001013 is a deficient number, since it is larger than the sum of its proper divisors (201075787).

2001001013 is a wasteful number, since it uses less digits than its factorization.

2001001013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 2001001013 is about 44732.5498155426. The cubic root of 2001001013 is about 1260.1312143942.

Adding to 2001001013 its reverse (3101001002), we get a palindrome (5102002015).

The spelling of 2001001013 in words is "two billion, one million, one thousand, thirteen".