21032030203 has 4 divisors (see below), whose sum is σ = 21032444880. Its totient is φ = 21031615528.

The previous prime is 21032030177. The next prime is 21032030237. The reversal of 21032030203 is 30203023012.

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 21032030203 - 2²⁹ = 20495159291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21032030303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118600 + ... + 236917.

It is an arithmetic number, because the mean of its divisors is an integer number (5258111220).

Almost surely, 2^21032030203 is an apocalyptic number.

21032030203 is a deficient number, since it is larger than the sum of its proper divisors (414677).

21032030203 is an equidigital number, since it uses as much as digits as its factorization.

21032030203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414676.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 21032030203 its reverse (30203023012), we get a palindrome (51235053215).

The spelling of 21032030203 in words is "twenty-one billion, thirty-two million, thirty thousand, two hundred three".