21330043003 has 8 divisors (see below), whose sum is σ = 21398025600. Its totient is φ = 21262103808.

The previous prime is 21330042997. The next prime is 21330043019. The reversal of 21330043003 is 30034003312.

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 21330043003 - 2⁵ = 21330042971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21330040003) 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, 1176733 + ... + 1194721.

It is an arithmetic number, because the mean of its divisors is an integer number (2674753200).

Almost surely, 2^21330043003 is an apocalyptic number.

21330043003 is a deficient number, since it is larger than the sum of its proper divisors (67982597).

21330043003 is a wasteful number, since it uses less digits than its factorization.

21330043003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21701.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 21330043003 its reverse (30034003312), we get a palindrome (51364046315).

The spelling of 21330043003 in words is "twenty-one billion, three hundred thirty million, forty-three thousand, three".