13201110002221 has 4 divisors (see below), whose sum is σ = 13234030476444. Its totient is φ = 13168189528000.

The previous prime is 13201110002191. The next prime is 13201110002237. The reversal of 13201110002221 is 12220001110231.

13201110002221 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.

It can be written as a sum of positive squares in 2 ways, for example, as 8349614784900 + 4851495217321 = 2889570^2 + 2202611^2 .

It is a cyclic number.

It is not a de Polignac number, because 13201110002221 - 2¹³ = 13201109994029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13201110002195 and 13201110002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13201110002921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16460236510 + ... + 16460237311.

It is an arithmetic number, because the mean of its divisors is an integer number (3308507619111).

Almost surely, 2^{13201110002221} is an apocalyptic number.

It is an amenable number.

13201110002221 is a deficient number, since it is larger than the sum of its proper divisors (32920474223).

13201110002221 is an equidigital number, since it uses as much as digits as its factorization.

13201110002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32920474222.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 13201110002221 its reverse (12220001110231), we get a palindrome (25421111112452).

The spelling of 13201110002221 in words is "thirteen trillion, two hundred one billion, one hundred ten million, two thousand, two hundred twenty-one".