13003310021 has 4 divisors (see below), whose sum is σ = 14003564652. Its totient is φ = 12003055392.

The previous prime is 13003310011. The next prime is 13003310051. The reversal of 13003310021 is 12001330031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8841640900 + 4161669121 = 94030^2 + 64511^2 .

It is a cyclic number.

It is not a de Polignac number, because 13003310021 - 2³⁰ = 11929568197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13003309978 and 13003310005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13003310011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500127296 + ... + 500127321.

It is an arithmetic number, because the mean of its divisors is an integer number (3500891163).

Almost surely, 2^13003310021 is an apocalyptic number.

It is an amenable number.

13003310021 is a deficient number, since it is larger than the sum of its proper divisors (1000254631).

13003310021 is a wasteful number, since it uses less digits than its factorization.

13003310021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000254630.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 13003310021 its reverse (12001330031), we get a palindrome (25004640052).

The spelling of 13003310021 in words is "thirteen billion, three million, three hundred ten thousand, twenty-one".