12110111121220 has 24 divisors (see below), whose sum is σ = 29064266691264. Its totient is φ = 4152038098656.

The previous prime is 12110111121217. The next prime is 12110111121289. The reversal of 12110111121220 is 2212111101121.

It is a junction number, because it is equal to n+sod(n) for n = 12110111121194 and 12110111121203.

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 7 ways as a sum of consecutive naturals, for example, 43250396722 + ... + 43250397001.

It is an arithmetic number, because the mean of its divisors is an integer number (1211011112136).

Almost surely, 2^{12110111121220} is an apocalyptic number.

12110111121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12110111121220 is an abundant number, since it is smaller than the sum of its proper divisors (16954155570044).

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

12110111121220 is a wasteful number, since it uses less digits than its factorization.

12110111121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86500793739 (or 86500793737 counting only the distinct ones).

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

Adding to 12110111121220 its reverse (2212111101121), we get a palindrome (14322222222341).

The spelling of 12110111121220 in words is "twelve trillion, one hundred ten billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twenty".