12131310211 has 4 divisors (see below), whose sum is σ = 12844916712. Its totient is φ = 11417703712.

The previous prime is 12131310203. The next prime is 12131310223. The reversal of 12131310211 is 11201313121.

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: 11201313121 = 36467 ⋅307163.

It is a cyclic number.

It is not a de Polignac number, because 12131310211 - 2³ = 12131310203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12131310271) 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, 356803225 + ... + 356803258.

It is an arithmetic number, because the mean of its divisors is an integer number (3211229178).

Almost surely, 2^12131310211 is an apocalyptic number.

12131310211 is a deficient number, since it is larger than the sum of its proper divisors (713606501).

12131310211 is an equidigital number, since it uses as much as digits as its factorization.

12131310211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713606500.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 12131310211 its reverse (11201313121), we get a palindrome (23332623332).

The spelling of 12131310211 in words is "twelve billion, one hundred thirty-one million, three hundred ten thousand, two hundred eleven".