21303110103 has 32 divisors (see below), whose sum is σ = 31171122432. Its totient is φ = 12834201600.

The previous prime is 21303110051. The next prime is 21303110113. The reversal of 21303110103 is 30101130312.

It is not a de Polignac number, because 21303110103 - 2⁸ = 21303109847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303110113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4585900 + ... + 4590542.

It is an arithmetic number, because the mean of its divisors is an integer number (974097576).

Almost surely, 2^21303110103 is an apocalyptic number.

21303110103 is a deficient number, since it is larger than the sum of its proper divisors (9868012329).

21303110103 is a wasteful number, since it uses less digits than its factorization.

21303110103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5455.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21303110103 its reverse (30101130312), we get a palindrome (51404240415).

The spelling of 21303110103 in words is "twenty-one billion, three hundred three million, one hundred ten thousand, one hundred three".