21331242303 has 48 divisors (see below), whose sum is σ = 34609323264. Its totient is φ = 11445672960.

The previous prime is 21331242301. The next prime is 21331242311. The reversal of 21331242303 is 30324213312.

It is not a de Polignac number, because 21331242303 - 2¹ = 21331242301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331242301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2769688 + ... + 2777378.

It is an arithmetic number, because the mean of its divisors is an integer number (721027568).

Almost surely, 2^21331242303 is an apocalyptic number.

21331242303 is a deficient number, since it is larger than the sum of its proper divisors (13278080961).

21331242303 is a wasteful number, since it uses less digits than its factorization.

21331242303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8192 (or 8175 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21331242303 its reverse (30324213312), we get a palindrome (51655455615).

The spelling of 21331242303 in words is "twenty-one billion, three hundred thirty-one million, two hundred forty-two thousand, three hundred three".