13221122011 has 4 divisors (see below), whose sum is σ = 13677022800. Its totient is φ = 12765221224.

The previous prime is 13221122009. The next prime is 13221122023. The reversal of 13221122011 is 11022112231.

13221122011 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 is a cyclic number.

It is not a de Polignac number, because 13221122011 - 2¹ = 13221122009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13221122611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227950351 + ... + 227950408.

It is an arithmetic number, because the mean of its divisors is an integer number (3419255700).

Almost surely, 2^13221122011 is an apocalyptic number.

13221122011 is a deficient number, since it is larger than the sum of its proper divisors (455900789).

13221122011 is an equidigital number, since it uses as much as digits as its factorization.

13221122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455900788.

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

Adding to 13221122011 its reverse (11022112231), we get a palindrome (24243234242).

The spelling of 13221122011 in words is "thirteen billion, two hundred twenty-one million, one hundred twenty-two thousand, eleven".