13111131211 has 2 divisors, whose sum is σ = 13111131212. Its totient is φ = 13111131210.

The previous prime is 13111131179. The next prime is 13111131223. The reversal of 13111131211 is 11213111131.

It is a strong prime.

It is an emirp because it is prime and its reverse (11213111131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13111131211 - 2⁵ = 13111131179 is a prime.

It is not a weakly prime, because it can be changed into another prime (13111131611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6555565605 + 6555565606.

It is an arithmetic number, because the mean of its divisors is an integer number (6555565606).

Almost surely, 2^13111131211 is an apocalyptic number.

13111131211 is a deficient number, since it is larger than the sum of its proper divisors (1).

13111131211 is an equidigital number, since it uses as much as digits as its factorization.

13111131211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18, while the sum is 16.

Adding to 13111131211 its reverse (11213111131), we get a palindrome (24324242342).

The spelling of 13111131211 in words is "thirteen billion, one hundred eleven million, one hundred thirty-one thousand, two hundred eleven".