21330313003 has 8 divisors (see below), whose sum is σ = 22033525760. Its totient is φ = 20628046440.

The previous prime is 21330312967. The next prime is 21330313021. The reversal of 21330313003 is 30031303312.

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 21330313003 - 2¹⁷ = 21330181931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21330313063) 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, 190575 + ... + 281032.

It is an arithmetic number, because the mean of its divisors is an integer number (2754190720).

Almost surely, 2^21330313003 is an apocalyptic number.

21330313003 is a deficient number, since it is larger than the sum of its proper divisors (703212757).

21330313003 is a wasteful number, since it uses less digits than its factorization.

21330313003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473097.

The product of its (nonzero) digits is 486, while the sum is 19.

Adding to 21330313003 its reverse (30031303312), we get a palindrome (51361616315).

The spelling of 21330313003 in words is "twenty-one billion, three hundred thirty million, three hundred thirteen thousand, three".