13111211231211 has 32 divisors (see below), whose sum is σ = 19623446857728. Its totient is φ = 7746097374720.

The previous prime is 13111211231159. The next prime is 13111211231231. The reversal of 13111211231211 is 11213211211131.

It is not a de Polignac number, because 13111211231211 - 2¹⁵ = 13111211198443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13111211231231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112008885 + ... + 112125878.

It is an arithmetic number, because the mean of its divisors is an integer number (613232714304).

Almost surely, 2^{13111211231211} is an apocalyptic number.

13111211231211 is a deficient number, since it is larger than the sum of its proper divisors (6512235626517).

13111211231211 is a wasteful number, since it uses less digits than its factorization.

13111211231211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224134851.

The product of its digits is 72, while the sum is 21.

Adding to 13111211231211 its reverse (11213211211131), we get a palindrome (24324422442342).

The spelling of 13111211231211 in words is "thirteen trillion, one hundred eleven billion, two hundred eleven million, two hundred thirty-one thousand, two hundred eleven".