2101010003 has 4 divisors (see below), whose sum is σ = 2192358288. Its totient is φ = 2009661720.

The previous prime is 2101009993. The next prime is 2101010011. The reversal of 2101010003 is 3000101012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101010003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101010083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45674108 + ... + 45674153.

It is an arithmetic number, because the mean of its divisors is an integer number (548089572).

Almost surely, 2^2101010003 is an apocalyptic number.

2101010003 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2101010003 is a deficient number, since it is larger than the sum of its proper divisors (91348285).

2101010003 is an equidigital number, since it uses as much as digits as its factorization.

2101010003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91348284.

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

The square root of 2101010003 is about 45836.7756610344. The cubic root of 2101010003 is about 1280.7844318923.

Adding to 2101010003 its reverse (3000101012), we get a palindrome (5101111015).

It can be divided in two parts, 21010 and 10003, that added together give a palindrome (31013).

The spelling of 2101010003 in words is "two billion, one hundred one million, ten thousand, three".