12222112011220 has 24 divisors (see below), whose sum is σ = 25773826176000. Its totient is φ = 4868389384992.

The previous prime is 12222112011169. The next prime is 12222112011283. The reversal of 12222112011220 is 2211021122221.

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, 1278458820 + ... + 1278468379.

It is an arithmetic number, because the mean of its divisors is an integer number (1073909424000).

Almost surely, 2^{12222112011220} is an apocalyptic number.

12222112011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222112011220 is an abundant number, since it is smaller than the sum of its proper divisors (13551714164780).

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

12222112011220 is a wasteful number, since it uses less digits than its factorization.

12222112011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2556927447 (or 2556927445 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12222112011220 its reverse (2211021122221), we get a palindrome (14433133133441).

The spelling of 12222112011220 in words is "twelve trillion, two hundred twenty-two billion, one hundred twelve million, eleven thousand, two hundred twenty".