2101110203 has 4 divisors (see below), whose sum is σ = 2101534680. Its totient is φ = 2100685728.

The previous prime is 2101110199. The next prime is 2101110229. The reversal of 2101110203 is 3020111012.

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

It is a cyclic number.

It is not a de Polignac number, because 2101110203 - 2² = 2101110199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101110103) 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, 204725 + ... + 214742.

It is an arithmetic number, because the mean of its divisors is an integer number (525383670).

Almost surely, 2^2101110203 is an apocalyptic number.

2101110203 is a deficient number, since it is larger than the sum of its proper divisors (424477).

2101110203 is an equidigital number, since it uses as much as digits as its factorization.

2101110203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424476.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 2101110203 is about 45837.8686568213. The cubic root of 2101110203 is about 1280.8047923475.

Adding to 2101110203 its reverse (3020111012), we get a palindrome (5121221215).

The spelling of 2101110203 in words is "two billion, one hundred one million, one hundred ten thousand, two hundred three".