21303200103 has 16 divisors (see below), whose sum is σ = 29388031200. Its totient is φ = 13710394880.

The previous prime is 21303200099. The next prime is 21303200117. The reversal of 21303200103 is 30100230312.

It is a cyclic number.

It is not a de Polignac number, because 21303200103 - 2² = 21303200099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303200903) 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, 783643 + ... + 810371.

It is an arithmetic number, because the mean of its divisors is an integer number (1836751950).

Almost surely, 2^21303200103 is an apocalyptic number.

21303200103 is a deficient number, since it is larger than the sum of its proper divisors (8084831097).

21303200103 is a wasteful number, since it uses less digits than its factorization.

21303200103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35922.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21303200103 its reverse (30100230312), we get a palindrome (51403430415).

The spelling of 21303200103 in words is "twenty-one billion, three hundred three million, two hundred thousand, one hundred three".