20203220203 has 6 divisors (see below), whose sum is σ = 20642224076. Its totient is φ = 19773362292.

The previous prime is 20203220179. The next prime is 20203220269. The reversal of 20203220203 is 30202230202.

It is not a de Polignac number, because 20203220203 - 2⁹ = 20203219691 is a prime.

It is a super-2 number, since 2×20203220203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20203220003) 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, 4570725 + ... + 4575142.

Almost surely, 2^20203220203 is an apocalyptic number.

20203220203 is a deficient number, since it is larger than the sum of its proper divisors (439003873).

20203220203 is an frugal number, since it uses more digits than its factorization.

20203220203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9145961 (or 9145914 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

Adding to 20203220203 its reverse (30202230202), we get a palindrome (50405450405).

Subtracting 20203220203 from its reverse (30202230202), we obtain a palindrome (9999009999).

It can be divided in two parts, 2020 and 3220203, that added together give a palindrome (3222223).

The spelling of 20203220203 in words is "twenty billion, two hundred three million, two hundred twenty thousand, two hundred three".