13221202211 has 4 divisors (see below), whose sum is σ = 15109945392. Its totient is φ = 11332459032.

The previous prime is 13221202177. The next prime is 13221202223. The reversal of 13221202211 is 11220212231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13221202211 - 2⁶ = 13221202147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13221202211.

It is not an unprimeable number, because it can be changed into a prime (13221202811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944371580 + ... + 944371593.

It is an arithmetic number, because the mean of its divisors is an integer number (3777486348).

Almost surely, 2^13221202211 is an apocalyptic number.

13221202211 is a deficient number, since it is larger than the sum of its proper divisors (1888743181).

13221202211 is an equidigital number, since it uses as much as digits as its factorization.

13221202211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888743180.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 13221202211 its reverse (11220212231), we get a palindrome (24441414442).

The spelling of 13221202211 in words is "thirteen billion, two hundred twenty-one million, two hundred two thousand, two hundred eleven".