12012111121110 has 64 divisors (see below), whose sum is σ = 30526507806912. Its totient is φ = 3014644985856.

The previous prime is 12012111121051. The next prime is 12012111121111. The reversal of 12012111121110 is 1112111121021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12012111121110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012111121111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9185682 + ... + 10411578.

It is an arithmetic number, because the mean of its divisors is an integer number (476976684483).

Almost surely, 2^{12012111121110} is an apocalyptic number.

12012111121110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12012111121110 is an abundant number, since it is smaller than the sum of its proper divisors (18514396685802).

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

12012111121110 is a wasteful number, since it uses less digits than its factorization.

12012111121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245137.

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

Adding to 12012111121110 its reverse (1112111121021), we get a palindrome (13124222242131).

The spelling of 12012111121110 in words is "twelve trillion, twelve billion, one hundred eleven million, one hundred twenty-one thousand, one hundred ten".