2100000203 has 6 divisors (see below), whose sum is σ = 2442857436. Its totient is φ = 1800000132.

The previous prime is 2100000173. The next prime is 2100000209. The reversal of 2100000203 is 3020000012.

It is not a de Polignac number, because 2100000203 - 2²⁴ = 2083222987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100000209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21428525 + ... + 21428622.

It is an arithmetic number, because the mean of its divisors is an integer number (407142906).

Almost surely, 2^2100000203 is an apocalyptic number.

2100000203 is a deficient number, since it is larger than the sum of its proper divisors (342857233).

2100000203 is an equidigital number, since it uses as much as digits as its factorization.

2100000203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42857161 (or 42857154 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 2100000203 is about 45825.7591644699. The cubic root of 2100000203 is about 1280.5792062506.

Adding to 2100000203 its reverse (3020000012), we get a palindrome (5120000215).

The spelling of 2100000203 in words is "two billion, one hundred million, two hundred three", and thus it is an aban number.