12111331232213 has 4 divisors (see below), whose sum is σ = 12111340211520. Its totient is φ = 12111322252908.

The previous prime is 12111331232207. The next prime is 12111331232227. The reversal of 12111331232213 is 31223213311121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12111331232213 - 2³⁶ = 12042611755477 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 (12111331232113) 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, 2009903 + ... + 5316236.

It is an arithmetic number, because the mean of its divisors is an integer number (3027835052880).

Almost surely, 2^{12111331232213} is an apocalyptic number.

It is an amenable number.

12111331232213 is a deficient number, since it is larger than the sum of its proper divisors (8979307).

12111331232213 is an equidigital number, since it uses as much as digits as its factorization.

12111331232213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8979306.

The product of its digits is 1296, while the sum is 26.

Adding to 12111331232213 its reverse (31223213311121), we get a palindrome (43334544543334).

The spelling of 12111331232213 in words is "twelve trillion, one hundred eleven billion, three hundred thirty-one million, two hundred thirty-two thousand, two hundred thirteen".