16133310021 has 4 divisors (see below), whose sum is σ = 21511080032. Its totient is φ = 10755540012.

The previous prime is 16133310013. The next prime is 16133310041. The reversal of 16133310021 is 12001333161.

16133310021 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, and also an emirpimes, since its reverse is a distinct semiprime: 12001333161 = 3 ⋅4000444387.

It is not a de Polignac number, because 16133310021 - 2³ = 16133310013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16133310021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16133310041) 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, 2688885001 + ... + 2688885006.

It is an arithmetic number, because the mean of its divisors is an integer number (5377770008).

Almost surely, 2^16133310021 is an apocalyptic number.

It is an amenable number.

16133310021 is a deficient number, since it is larger than the sum of its proper divisors (5377770011).

16133310021 is an equidigital number, since it uses as much as digits as its factorization.

16133310021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5377770010.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 16133310021 its reverse (12001333161), we get a palindrome (28134643182).

The spelling of 16133310021 in words is "sixteen billion, one hundred thirty-three million, three hundred ten thousand, twenty-one".