13003020021 has 8 divisors (see below), whose sum is σ = 17338955904. Its totient is φ = 8667882080.

The previous prime is 13003019983. The next prime is 13003020067. The reversal of 13003020021 is 12002030031.

It is a happy number.

13003020021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13003020021 - 2⁹ = 13003019509 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13003019979 and 13003020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13003020221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160365 + ... + 227426.

It is an arithmetic number, because the mean of its divisors is an integer number (2167369488).

Almost surely, 2^13003020021 is an apocalyptic number.

It is an amenable number.

13003020021 is a deficient number, since it is larger than the sum of its proper divisors (4335935883).

13003020021 is a wasteful number, since it uses less digits than its factorization.

13003020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398971.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 13003020021 its reverse (12002030031), we get a palindrome (25005050052).

It can be divided in two parts, 130030 and 20021, that added together give a palindrome (150051).

The spelling of 13003020021 in words is "thirteen billion, three million, twenty thousand, twenty-one".