12012121110111 has 8 divisors (see below), whose sum is σ = 16077059433600. Its totient is φ = 7977631763352.

The previous prime is 12012121110107. The next prime is 12012121110113. The reversal of 12012121110111 is 11101112121021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12012121110111 - 2² = 12012121110107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012121110113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7612243261 + ... + 7612244838.

It is an arithmetic number, because the mean of its divisors is an integer number (2009632429200).

Almost surely, 2^{12012121110111} is an apocalyptic number.

12012121110111 is a deficient number, since it is larger than the sum of its proper divisors (4064938323489).

12012121110111 is a wasteful number, since it uses less digits than its factorization.

12012121110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15224488365.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12012121110111 its reverse (11101112121021), we get a palindrome (23113233231132).

The spelling of 12012121110111 in words is "twelve trillion, twelve billion, one hundred twenty-one million, one hundred ten thousand, one hundred eleven".