13321104021 has 32 divisors (see below), whose sum is σ = 20199845120. Its totient is φ = 8673910272.

The previous prime is 13321104011. The next prime is 13321104047. The reversal of 13321104021 is 12040112331.

It is not a de Polignac number, because 13321104021 - 2¹¹ = 13321101973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13321103985 and 13321104003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321104011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170205 + ... + 235821.

It is an arithmetic number, because the mean of its divisors is an integer number (631245160).

Almost surely, 2^13321104021 is an apocalyptic number.

It is an amenable number.

13321104021 is a deficient number, since it is larger than the sum of its proper divisors (6878741099).

13321104021 is a wasteful number, since it uses less digits than its factorization.

13321104021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65802 (or 65796 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13321104021 its reverse (12040112331), we get a palindrome (25361216352).

The spelling of 13321104021 in words is "thirteen billion, three hundred twenty-one million, one hundred four thousand, twenty-one".