12111110100220 has 24 divisors (see below), whose sum is σ = 26771927590800. Its totient is φ = 4589473300992.

The previous prime is 12111110100169. The next prime is 12111110100253. The reversal of 12111110100220 is 2200101111121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12111110100220.

It is a congruent number.

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, 15935670805 + ... + 15935671564.

It is an arithmetic number, because the mean of its divisors is an integer number (1115496982950).

Almost surely, 2^{12111110100220} is an apocalyptic number.

12111110100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111110100220 is an abundant number, since it is smaller than the sum of its proper divisors (14660817490580).

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

12111110100220 is a wasteful number, since it uses less digits than its factorization.

12111110100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31871342397 (or 31871342395 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12111110100220 its reverse (2200101111121), we get a palindrome (14311211211341).

The spelling of 12111110100220 in words is "twelve trillion, one hundred eleven billion, one hundred ten million, one hundred thousand, two hundred twenty".