20303121203 has 16 divisors (see below), whose sum is σ = 20615364000. Its totient is φ = 19993588992.

The previous prime is 20303121109. The next prime is 20303121229. The reversal of 20303121203 is 30212130302.

It is a cyclic number.

It is not a de Polignac number, because 20303121203 - 2²² = 20298926899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20303121263) 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, 21667751 + ... + 21668687.

It is an arithmetic number, because the mean of its divisors is an integer number (1288460250).

Almost surely, 2^20303121203 is an apocalyptic number.

20303121203 is a deficient number, since it is larger than the sum of its proper divisors (312242797).

20303121203 is a wasteful number, since it uses less digits than its factorization.

20303121203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20303121203 its reverse (30212130302), we get a palindrome (50515251505).

Subtracting 20303121203 from its reverse (30212130302), we obtain a palindrome (9909009099).

The spelling of 20303121203 in words is "twenty billion, three hundred three million, one hundred twenty-one thousand, two hundred three".