12012131120111 has 4 divisors (see below), whose sum is σ = 12012403480224. Its totient is φ = 12011858760000.

The previous prime is 12012131120107. The next prime is 12012131120177. The reversal of 12012131120111 is 11102113121021.

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 12012131120111 - 2² = 12012131120107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12012131120111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012131129111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136113890 + ... + 136202111.

It is an arithmetic number, because the mean of its divisors is an integer number (3003100870056).

Almost surely, 2^{12012131120111} is an apocalyptic number.

12012131120111 is a deficient number, since it is larger than the sum of its proper divisors (272360113).

12012131120111 is an equidigital number, since it uses as much as digits as its factorization.

12012131120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272360112.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 12012131120111 its reverse (11102113121021), we get a palindrome (23114244241132).

The spelling of 12012131120111 in words is "twelve trillion, twelve billion, one hundred thirty-one million, one hundred twenty thousand, one hundred eleven".