12221202120 has 64 divisors (see below), whose sum is σ = 37654528320. Its totient is φ = 3170905344.

The previous prime is 12221202073. The next prime is 12221202181. The reversal of 12221202120 is 2120212221.

12221202120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12221202120.

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 15 ways as a sum of consecutive naturals, for example, 1371822 + ... + 1380701.

It is an arithmetic number, because the mean of its divisors is an integer number (588352005).

Almost surely, 2^12221202120 is an apocalyptic number.

12221202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221202120 is an abundant number, since it is smaller than the sum of its proper divisors (25433326200).

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

12221202120 is a wasteful number, since it uses less digits than its factorization.

12221202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752574 (or 2752570 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12221202120 its reverse (2120212221), we get a palindrome (14341414341).

The spelling of 12221202120 in words is "twelve billion, two hundred twenty-one million, two hundred two thousand, one hundred twenty".