13011203221 has 8 divisors (see below), whose sum is σ = 13210455744. Its totient is φ = 12812099520.

The previous prime is 13011203209. The next prime is 13011203243. The reversal of 13011203221 is 12230211031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13011203221 - 2⁹ = 13011202709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13011203195 and 13011203204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13011203321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145821 + ... + 217453.

It is an arithmetic number, because the mean of its divisors is an integer number (1651306968).

Almost surely, 2^13011203221 is an apocalyptic number.

It is an amenable number.

13011203221 is a deficient number, since it is larger than the sum of its proper divisors (199252523).

13011203221 is an equidigital number, since it uses as much as digits as its factorization.

13011203221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74411.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13011203221 its reverse (12230211031), we get a palindrome (25241414252).

The spelling of 13011203221 in words is "thirteen billion, eleven million, two hundred three thousand, two hundred twenty-one".