12012231022111 has 4 divisors (see below), whose sum is σ = 12012260678824. Its totient is φ = 12012201365400.

The previous prime is 12012231022091. The next prime is 12012231022123. The reversal of 12012231022111 is 11122013221021.

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 12012231022111 - 2¹⁹ = 12012230497823 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 (12012231022151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14212260 + ... + 15033721.

It is an arithmetic number, because the mean of its divisors is an integer number (3003065169706).

Almost surely, 2^{12012231022111} is an apocalyptic number.

12012231022111 is a deficient number, since it is larger than the sum of its proper divisors (29656713).

12012231022111 is an equidigital number, since it uses as much as digits as its factorization.

12012231022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29656712.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 12012231022111 its reverse (11122013221021), we get a palindrome (23134244243132).

The spelling of 12012231022111 in words is "twelve trillion, twelve billion, two hundred thirty-one million, twenty-two thousand, one hundred eleven".