12111202220 has 96 divisors (see below), whose sum is σ = 29040379200. Its totient is φ = 4203085824.

The previous prime is 12111202211. The next prime is 12111202231. The reversal of 12111202220 is 2220211121.

12111202220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12111202195 and 12111202204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4502636 + ... + 4505324.

It is an arithmetic number, because the mean of its divisors is an integer number (302503950).

Almost surely, 2^12111202220 is an apocalyptic number.

12111202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12111202220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14520189600).

12111202220 is an abundant number, since it is smaller than the sum of its proper divisors (16929176980).

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

12111202220 is a wasteful number, since it uses less digits than its factorization.

12111202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747 (or 3745 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12111202220 its reverse (2220211121), we get a palindrome (14331413341).

The spelling of 12111202220 in words is "twelve billion, one hundred eleven million, two hundred two thousand, two hundred twenty".