21330231003 has 48 divisors (see below), whose sum is σ = 33671040000. Its totient is φ = 12960368064.

The previous prime is 21330230989. The next prime is 21330231031. The reversal of 21330231003 is 30013203312.

21330231003 is a `hidden beast` number, since 21 + 330 + 2 + 310 + 0 + 3 = 666.

It is not a de Polignac number, because 21330231003 - 2¹⁰ = 21330229979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21330230003) 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, 1395798 + ... + 1410996.

It is an arithmetic number, because the mean of its divisors is an integer number (701480000).

Almost surely, 2^21330231003 is an apocalyptic number.

21330231003 is a deficient number, since it is larger than the sum of its proper divisors (12340808997).

21330231003 is a wasteful number, since it uses less digits than its factorization.

21330231003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15536 (or 15533 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 21330231003 its reverse (30013203312), we get a palindrome (51343434315).

The spelling of 21330231003 in words is "twenty-one billion, three hundred thirty million, two hundred thirty-one thousand, three".