202103212103 has 4 divisors (see below), whose sum is σ = 217649613048. Its totient is φ = 186556811160.

The previous prime is 202103212099. The next prime is 202103212133. The reversal of 202103212103 is 301212301202.

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 202103212103 - 2² = 202103212099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202103212133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7773200453 + ... + 7773200478.

It is an arithmetic number, because the mean of its divisors is an integer number (54412403262).

Almost surely, 2^202103212103 is an apocalyptic number.

202103212103 is a deficient number, since it is larger than the sum of its proper divisors (15546400945).

202103212103 is a wasteful number, since it uses less digits than its factorization.

202103212103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15546400944.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 202103212103 its reverse (301212301202), we get a palindrome (503315513305).

The spelling of 202103212103 in words is "two hundred two billion, one hundred three million, two hundred twelve thousand, one hundred three".