21132110303 has 4 divisors (see below), whose sum is σ = 21190974480. Its totient is φ = 21073246128.

The previous prime is 21132110297. The next prime is 21132110323. The reversal of 21132110303 is 30301123112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21132110303 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 (21132110323) 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, 29431550 + ... + 29432267.

It is an arithmetic number, because the mean of its divisors is an integer number (5297743620).

Almost surely, 2^21132110303 is an apocalyptic number.

21132110303 is a deficient number, since it is larger than the sum of its proper divisors (58864177).

21132110303 is an equidigital number, since it uses as much as digits as its factorization.

21132110303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58864176.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21132110303 its reverse (30301123112), we get a palindrome (51433233415).

The spelling of 21132110303 in words is "twenty-one billion, one hundred thirty-two million, one hundred ten thousand, three hundred three".