13330221021 has 24 divisors (see below), whose sum is σ = 21637464576. Its totient is φ = 7846549920.

The previous prime is 13330221007. The next prime is 13330221031. The reversal of 13330221021 is 12012203331.

13330221021 is a `hidden beast` number, since 133 + 302 + 210 + 21 = 666.

It is not a de Polignac number, because 13330221021 - 2⁵ = 13330220989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13330220985 and 13330221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13330221031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2474125 + ... + 2479506.

It is an arithmetic number, because the mean of its divisors is an integer number (901561024).

Almost surely, 2^13330221021 is an apocalyptic number.

It is an amenable number.

13330221021 is a deficient number, since it is larger than the sum of its proper divisors (8307243555).

13330221021 is a wasteful number, since it uses less digits than its factorization.

13330221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4953673 (or 4953670 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13330221021 its reverse (12012203331), we get a palindrome (25342424352).

The spelling of 13330221021 in words is "thirteen billion, three hundred thirty million, two hundred twenty-one thousand, twenty-one".