13020333021 has 24 divisors (see below), whose sum is σ = 18951610496. Its totient is φ = 8613669600.

The previous prime is 13020333013. The next prime is 13020333023. The reversal of 13020333021 is 12033302031.

13020333021 is a `hidden beast` number, since 130 + 203 + 330 + 2 + 1 = 666.

It is not a de Polignac number, because 13020333021 - 2³ = 13020333013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13020332985 and 13020333003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13020333023) 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, 1440111 + ... + 1449123.

Almost surely, 2^13020333021 is an apocalyptic number.

It is an amenable number.

13020333021 is a deficient number, since it is larger than the sum of its proper divisors (5931277475).

13020333021 is a wasteful number, since it uses less digits than its factorization.

13020333021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10233 (or 10230 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 13020333021 its reverse (12033302031), we get a palindrome (25053635052).

The spelling of 13020333021 in words is "thirteen billion, twenty million, three hundred thirty-three thousand, twenty-one".