2001100003 has 8 divisors (see below), whose sum is σ = 2360744960. Its totient is φ = 1659898440.

The previous prime is 2001100001. The next prime is 2001100019. The reversal of 2001100003 is 3000011002.

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 2001100003 - 2¹ = 2001100001 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 (2001100001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4610613 + ... + 4611046.

It is an arithmetic number, because the mean of its divisors is an integer number (295093120).

Almost surely, 2^2001100003 is an apocalyptic number.

2001100003 is a deficient number, since it is larger than the sum of its proper divisors (359644957).

2001100003 is an equidigital number, since it uses as much as digits as its factorization.

2001100003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9221697.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 2001100003 is about 44733.6562668423. The cubic root of 2001100003 is about 1260.1519937160.

Adding to 2001100003 its reverse (3000011002), we get a palindrome (5001111005).

The spelling of 2001100003 in words is "two billion, one million, one hundred thousand, three".