13022121331 has 4 divisors (see below), whose sum is σ = 13022461192. Its totient is φ = 13021781472.

The previous prime is 13022121323. The next prime is 13022121367. The reversal of 13022121331 is 13312122031.

13022121331 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 13022121331 - 2³ = 13022121323 is a prime.

It is a super-2 number, since 2×13022121331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13022121299 and 13022121308.

It is not an unprimeable number, because it can be changed into a prime (13022121031) 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, 103905 + ... + 191938.

It is an arithmetic number, because the mean of its divisors is an integer number (3255615298).

Almost surely, 2^13022121331 is an apocalyptic number.

13022121331 is a deficient number, since it is larger than the sum of its proper divisors (339861).

13022121331 is an equidigital number, since it uses as much as digits as its factorization.

13022121331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339860.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13022121331 its reverse (13312122031), we get a palindrome (26334243362).

The spelling of 13022121331 in words is "thirteen billion, twenty-two million, one hundred twenty-one thousand, three hundred thirty-one".