12110121211111 has 12 divisors (see below), whose sum is σ = 15367946027400. Its totient is φ = 9436458086160.

The previous prime is 12110121211093. The next prime is 12110121211121. The reversal of 12110121211111 is 11111212101121.

It is not a de Polignac number, because 12110121211111 - 2⁷ = 12110121210983 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 (12110121211121) 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 11 ways as a sum of consecutive naturals, for example, 11233878136 + ... + 11233879213.

It is an arithmetic number, because the mean of its divisors is an integer number (1280662168950).

Almost surely, 2^{12110121211111} is an apocalyptic number.

12110121211111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12110121211111 is a deficient number, since it is larger than the sum of its proper divisors (3257824816289).

12110121211111 is a wasteful number, since it uses less digits than its factorization.

12110121211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22467757374 (or 22467757367 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 12110121211111 its reverse (11111212101121), we get a palindrome (23221333312232).

The spelling of 12110121211111 in words is "twelve trillion, one hundred ten billion, one hundred twenty-one million, two hundred eleven thousand, one hundred eleven".