21300104103 has 4 divisors (see below), whose sum is σ = 28400138808. Its totient is φ = 14200069400.

The previous prime is 21300104087. The next prime is 21300104113. The reversal of 21300104103 is 30140100312.

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 21300104103 - 2⁴ = 21300104087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300104113) 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, 3550017348 + ... + 3550017353.

It is an arithmetic number, because the mean of its divisors is an integer number (7100034702).

Almost surely, 2^21300104103 is an apocalyptic number.

21300104103 is a deficient number, since it is larger than the sum of its proper divisors (7100034705).

21300104103 is an equidigital number, since it uses as much as digits as its factorization.

21300104103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7100034704.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21300104103 its reverse (30140100312), we get a palindrome (51440204415).

The spelling of 21300104103 in words is "twenty-one billion, three hundred million, one hundred four thousand, one hundred three".