202123203103 has 2 divisors, whose sum is σ = 202123203104. Its totient is φ = 202123203102.

The previous prime is 202123203089. The next prime is 202123203131. The reversal of 202123203103 is 301302321202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202123203103 - 2⁹ = 202123202591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202123203173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101061601551 + 101061601552.

It is an arithmetic number, because the mean of its divisors is an integer number (101061601552).

Almost surely, 2^202123203103 is an apocalyptic number.

202123203103 is a deficient number, since it is larger than the sum of its proper divisors (1).

202123203103 is an equidigital number, since it uses as much as digits as its factorization.

202123203103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 202123203103 its reverse (301302321202), we get a palindrome (503425524305).

The spelling of 202123203103 in words is "two hundred two billion, one hundred twenty-three million, two hundred three thousand, one hundred three".