13111012211 has 16 divisors (see below), whose sum is σ = 14527040640. Its totient is φ = 11732973120.

The previous prime is 13111012199. The next prime is 13111012237. The reversal of 13111012211 is 11221011131.

It is not a de Polignac number, because 13111012211 - 2⁶ = 13111012147 is a prime.

It is a super-2 number, since 2×13111012211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13111012261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404360 + ... + 435578.

It is an arithmetic number, because the mean of its divisors is an integer number (907940040).

Almost surely, 2^13111012211 is an apocalyptic number.

13111012211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13111012211 is a deficient number, since it is larger than the sum of its proper divisors (1416028429).

13111012211 is a wasteful number, since it uses less digits than its factorization.

13111012211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31826.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 13111012211 its reverse (11221011131), we get a palindrome (24332023342).

The spelling of 13111012211 in words is "thirteen billion, one hundred eleven million, twelve thousand, two hundred eleven".