12231131201111 has 4 divisors (see below), whose sum is σ = 12265780298352. Its totient is φ = 12196482103872.

The previous prime is 12231131201089. The next prime is 12231131201117. The reversal of 12231131201111 is 11110213113221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12231131201111 - 2³⁰ = 12230057459287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231131201117) 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, 17324548091 + ... + 17324548796.

It is an arithmetic number, because the mean of its divisors is an integer number (3066445074588).

Almost surely, 2^{12231131201111} is an apocalyptic number.

12231131201111 is a deficient number, since it is larger than the sum of its proper divisors (34649097241).

12231131201111 is an equidigital number, since it uses as much as digits as its factorization.

12231131201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34649097240.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 12231131201111 its reverse (11110213113221), we get a palindrome (23341344314332).

The spelling of 12231131201111 in words is "twelve trillion, two hundred thirty-one billion, one hundred thirty-one million, two hundred one thousand, one hundred eleven".