210100203 has 16 divisors (see below), whose sum is σ = 311500800. Its totient is φ = 139958280.

The previous prime is 210100181. The next prime is 210100211. The reversal of 210100203 is 302001012.

It is a happy number.

It is not a de Polignac number, because 210100203 - 2⁶ = 210100139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (210100243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48438 + ... + 52596.

It is an arithmetic number, because the mean of its divisors is an integer number (19468800).

Almost surely, 2^210100203 is an apocalyptic number.

210100203 is a deficient number, since it is larger than the sum of its proper divisors (101400597).

210100203 is a wasteful number, since it uses less digits than its factorization.

210100203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6039 (or 6033 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 210100203 is about 14494.8336658273. The cubic root of 210100203 is about 594.4867197374.

Adding to 210100203 its reverse (302001012), we get a palindrome (512101215).

The spelling of 210100203 in words is "two hundred ten million, one hundred thousand, two hundred three".