13313211155 has 4 divisors (see below), whose sum is σ = 15975853392. Its totient is φ = 10650568920.

The previous prime is 13313211127. The next prime is 13313211157. The reversal of 13313211155 is 55111231331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55111231331 = 13 ⋅4239325487.

It is not a de Polignac number, because 13313211155 - 2⁶ = 13313211091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13313211157) 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, 1331321111 + ... + 1331321120.

It is an arithmetic number, because the mean of its divisors is an integer number (3993963348).

Almost surely, 2^13313211155 is an apocalyptic number.

13313211155 is a deficient number, since it is larger than the sum of its proper divisors (2662642237).

13313211155 is an equidigital number, since it uses as much as digits as its factorization.

13313211155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662642236.

The product of its digits is 1350, while the sum is 26.

Adding to 13313211155 its reverse (55111231331), we get a palindrome (68424442486).

The spelling of 13313211155 in words is "thirteen billion, three hundred thirteen million, two hundred eleven thousand, one hundred fifty-five".