12111000111111 has 8 divisors (see below), whose sum is σ = 17616000161664. Its totient is φ = 7340000067320.

The previous prime is 12111000111079. The next prime is 12111000111121. The reversal of 12111000111111 is 11111100011121.

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

It is a cyclic number.

It is not a de Polignac number, because 12111000111111 - 2⁵ = 12111000111079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111000111121) 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, 183500001651 + ... + 183500001716.

It is an arithmetic number, because the mean of its divisors is an integer number (2202000020208).

Almost surely, 2^{12111000111111} is an apocalyptic number.

12111000111111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12111000111111 is a deficient number, since it is larger than the sum of its proper divisors (5505000050553).

12111000111111 is a wasteful number, since it uses less digits than its factorization.

12111000111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367000003381.

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 12111000111111 its reverse (11111100011121), we get a palindrome (23222100122232).

The spelling of 12111000111111 in words is "twelve trillion, one hundred eleven billion, one hundred eleven thousand, one hundred eleven".