203320021203 has 12 divisors (see below), whose sum is σ = 316275588720. Its totient is φ = 125120012976.

The previous prime is 203320021189. The next prime is 203320021211. The reversal of 203320021203 is 302120023302.

It is a happy number.

It is not a de Polignac number, because 203320021203 - 2⁵ = 203320021171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203320021213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 868888863 + ... + 868889096.

It is an arithmetic number, because the mean of its divisors is an integer number (26356299060).

Almost surely, 2^203320021203 is an apocalyptic number.

203320021203 is a deficient number, since it is larger than the sum of its proper divisors (112955567517).

203320021203 is a wasteful number, since it uses less digits than its factorization.

203320021203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737777978 (or 1737777975 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 203320021203 its reverse (302120023302), we get a palindrome (505440044505).

The spelling of 203320021203 in words is "two hundred three billion, three hundred twenty million, twenty-one thousand, two hundred three".