13303400021 has 4 divisors (see below), whose sum is σ = 13303781952. Its totient is φ = 13303018092.

The previous prime is 13303400017. The next prime is 13303400023. The reversal of 13303400021 is 12000430331.

It is a happy number.

13303400021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13303400021 - 2² = 13303400017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13303400023) 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 3 ways as a sum of consecutive naturals, for example, 132815 + ... + 210348.

It is an arithmetic number, because the mean of its divisors is an integer number (3325945488).

Almost surely, 2^13303400021 is an apocalyptic number.

It is an amenable number.

13303400021 is a deficient number, since it is larger than the sum of its proper divisors (381931).

13303400021 is an equidigital number, since it uses as much as digits as its factorization.

13303400021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381930.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 13303400021 its reverse (12000430331), we get a palindrome (25303830352).

The spelling of 13303400021 in words is "thirteen billion, three hundred three million, four hundred thousand, twenty-one".