12111000120012 has 48 divisors (see below), whose sum is σ = 29746718951040. Its totient is φ = 3824474556672.

The previous prime is 12111000119957. The next prime is 12111000120047. The reversal of 12111000120012 is 21002100011121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 12111000120012.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 18728503 + ... + 19364369.

It is an arithmetic number, because the mean of its divisors is an integer number (619723311480).

Almost surely, 2^{12111000120012} is an apocalyptic number.

12111000120012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12111000120012 is an abundant number, since it is smaller than the sum of its proper divisors (17635718831028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12111000120012 is a wasteful number, since it uses less digits than its factorization.

12111000120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719430 (or 719428 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12111000120012 its reverse (21002100011121), we get a palindrome (33113100131133).

The spelling of 12111000120012 in words is "twelve trillion, one hundred eleven billion, one hundred twenty thousand, twelve".