13311422221 has 4 divisors (see below), whose sum is σ = 13393087552. Its totient is φ = 13229756892.

The previous prime is 13311422219. The next prime is 13311422251. The reversal of 13311422221 is 12222411331.

13311422221 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12222411331 = 13 ⋅940185487.

It is a cyclic number.

It is not a de Polignac number, because 13311422221 - 2¹ = 13311422219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13311422192 and 13311422201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13311422251) 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, 40832421 + ... + 40832746.

It is an arithmetic number, because the mean of its divisors is an integer number (3348271888).

Almost surely, 2^13311422221 is an apocalyptic number.

It is an amenable number.

13311422221 is a deficient number, since it is larger than the sum of its proper divisors (81665331).

13311422221 is an equidigital number, since it uses as much as digits as its factorization.

13311422221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81665330.

The product of its digits is 576, while the sum is 22.

Adding to 13311422221 its reverse (12222411331), we get a palindrome (25533833552).

The spelling of 13311422221 in words is "thirteen billion, three hundred eleven million, four hundred twenty-two thousand, two hundred twenty-one".