21013330003 has 8 divisors (see below), whose sum is σ = 22191350720. Its totient is φ = 19842514920.

The previous prime is 21013329937. The next prime is 21013330021. The reversal of 21013330003 is 30003331012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21013330003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21013330103) 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, 1795413 + ... + 1807078.

It is an arithmetic number, because the mean of its divisors is an integer number (2773918840).

Almost surely, 2^21013330003 is an apocalyptic number.

21013330003 is a deficient number, since it is larger than the sum of its proper divisors (1178020717).

21013330003 is a wasteful number, since it uses less digits than its factorization.

21013330003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3602817.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 21013330003 its reverse (30003331012), we get a palindrome (51016661015).

The spelling of 21013330003 in words is "twenty-one billion, thirteen million, three hundred thirty thousand, three".