20212103203 has 4 divisors (see below), whose sum is σ = 20642148000. Its totient is φ = 19782058408.

The previous prime is 20212103201. The next prime is 20212103209. The reversal of 20212103203 is 30230121202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30230121202 = 2 ⋅15115060601.

It is a cyclic number.

It is not a de Polignac number, because 20212103203 - 2¹ = 20212103201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212103201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215022328 + ... + 215022421.

It is an arithmetic number, because the mean of its divisors is an integer number (5160537000).

Almost surely, 2^20212103203 is an apocalyptic number.

20212103203 is a deficient number, since it is larger than the sum of its proper divisors (430044797).

20212103203 is an equidigital number, since it uses as much as digits as its factorization.

20212103203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430044796.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20212103203 its reverse (30230121202), we get a palindrome (50442224405).

The spelling of 20212103203 in words is "twenty billion, two hundred twelve million, one hundred three thousand, two hundred three".