21300331103 has 4 divisors (see below), whose sum is σ = 21379514760. Its totient is φ = 21221147448.

The previous prime is 21300331081. The next prime is 21300331109. The reversal of 21300331103 is 30113300312.

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 21300331103 - 2¹² = 21300327007 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 (21300331109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39591425 + ... + 39591962.

It is an arithmetic number, because the mean of its divisors is an integer number (5344878690).

Almost surely, 2^21300331103 is an apocalyptic number.

21300331103 is a deficient number, since it is larger than the sum of its proper divisors (79183657).

21300331103 is an equidigital number, since it uses as much as digits as its factorization.

21300331103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79183656.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 21300331103 its reverse (30113300312), we get a palindrome (51413631415).

The spelling of 21300331103 in words is "twenty-one billion, three hundred million, three hundred thirty-one thousand, one hundred three".