12222222222220 has 24 divisors (see below), whose sum is σ = 25666782783264. Its totient is φ = 4888866771456.

The previous prime is 12222222222211. The next prime is 12222222222251. The reversal of 12222222222220 is 2222222222221.

It is a happy 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, 3584257 + ... + 6106663.

It is an arithmetic number, because the mean of its divisors is an integer number (1069449282636).

Almost surely, 2^{12222222222220} is an apocalyptic number.

12222222222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222222222220 is an abundant number, since it is smaller than the sum of its proper divisors (13444560561044).

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

12222222222220 is a wasteful number, since it uses less digits than its factorization.

12222222222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764689 (or 2764687 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 12222222222220 its reverse (2222222222221), we get a palindrome (14444444444441).

Subtracting from 12222222222220 its reverse (2222222222221), we obtain a palindrome (9999999999999).

The spelling of 12222222222220 in words is "twelve trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty".