13331122111 has 4 divisors (see below), whose sum is σ = 13337753224. Its totient is φ = 13324491000.

The previous prime is 13331122087. The next prime is 13331122117. The reversal of 13331122111 is 11122113331.

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 13331122111 - 2²⁹ = 12794251199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13331122117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3312540 + ... + 3316561.

It is an arithmetic number, because the mean of its divisors is an integer number (3334438306).

Almost surely, 2^13331122111 is an apocalyptic number.

13331122111 is a deficient number, since it is larger than the sum of its proper divisors (6631113).

13331122111 is an equidigital number, since it uses as much as digits as its factorization.

13331122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6631112.

The product of its digits is 108, while the sum is 19.

Adding to 13331122111 its reverse (11122113331), we get a palindrome (24453235442).

The spelling of 13331122111 in words is "thirteen billion, three hundred thirty-one million, one hundred twenty-two thousand, one hundred eleven".