12111220110210 has 64 divisors (see below), whose sum is σ = 31541798977920. Its totient is φ = 2958465968640.

The previous prime is 12111220110191. The next prime is 12111220110217. The reversal of 12111220110210 is 1201102211121.

It is a happy number.

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 12111220110210.

It is not an unprimeable number, because it can be changed into a prime (12111220110217) 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 31 ways as a sum of consecutive naturals, for example, 118477195 + ... + 118579374.

It is an arithmetic number, because the mean of its divisors is an integer number (492840609030).

Almost surely, 2^{12111220110210} is an apocalyptic number.

12111220110210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12111220110210 is an abundant number, since it is smaller than the sum of its proper divisors (19430578867710).

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

12111220110210 is a wasteful number, since it uses less digits than its factorization.

12111220110210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237056723.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12111220110210 its reverse (1201102211121), we get a palindrome (13312322321331).

The spelling of 12111220110210 in words is "twelve trillion, one hundred eleven billion, two hundred twenty million, one hundred ten thousand, two hundred ten".