2011001003 has 12 divisors (see below), whose sum is σ = 2212566720. Its totient is φ = 1826423280.

The previous prime is 2011000963. The next prime is 2011001033. The reversal of 2011001003 is 3001001102.

It is not a de Polignac number, because 2011001003 - 2¹⁰ = 2010999979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011001033) 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, 127718 + ... + 142596.

It is an arithmetic number, because the mean of its divisors is an integer number (184380560).

Almost surely, 2^2011001003 is an apocalyptic number.

2011001003 is a deficient number, since it is larger than the sum of its proper divisors (201565717).

2011001003 is a wasteful number, since it uses less digits than its factorization.

2011001003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16018 (or 16007 counting only the distinct ones).

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

The square root of 2011001003 is about 44844.1858327253. The cubic root of 2011001003 is about 1262.2268931586.

Adding to 2011001003 its reverse (3001001102), we get a palindrome (5012002105).

Subtracting 2011001003 from its reverse (3001001102), we obtain a palindrome (990000099).

The spelling of 2011001003 in words is "two billion, eleven million, one thousand, three".