12221000133220 has 48 divisors (see below), whose sum is σ = 25824880287360. Its totient is φ = 4857783031296.

The previous prime is 12221000133211. The next prime is 12221000133227. The reversal of 12221000133220 is 2233100012221.

It is not an unprimeable number, because it can be changed into a prime (12221000133227) 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 15 ways as a sum of consecutive naturals, for example, 25447644 + ... + 25923436.

It is an arithmetic number, because the mean of its divisors is an integer number (538018339320).

Almost surely, 2^{12221000133220} is an apocalyptic number.

12221000133220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221000133220 is an abundant number, since it is smaller than the sum of its proper divisors (13603880154140).

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

12221000133220 is a wasteful number, since it uses less digits than its factorization.

12221000133220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483844 (or 483842 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12221000133220 its reverse (2233100012221), we get a palindrome (14454100145441).

The spelling of 12221000133220 in words is "twelve trillion, two hundred twenty-one billion, one hundred thirty-three thousand, two hundred twenty".