21103232303 has 8 divisors (see below), whose sum is σ = 22755732720. Its totient is φ = 19504912320.

The previous prime is 21103232263. The next prime is 21103232333. The reversal of 21103232303 is 30323230112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21103232303 - 2²⁸ = 20834796847 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 (21103232333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13544300 + ... + 13545857.

It is an arithmetic number, because the mean of its divisors is an integer number (2844466590).

Almost surely, 2^21103232303 is an apocalyptic number.

21103232303 is a deficient number, since it is larger than the sum of its proper divisors (1652500417).

21103232303 is a wasteful number, since it uses less digits than its factorization.

21103232303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27090217.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21103232303 its reverse (30323230112), we get a palindrome (51426462415).

The spelling of 21103232303 in words is "twenty-one billion, one hundred three million, two hundred thirty-two thousand, three hundred three".