12201221231120 has 80 divisors (see below), whose sum is σ = 29880495829440. Its totient is φ = 4620583936512.

The previous prime is 12201221231051. The next prime is 12201221231203. The reversal of 12201221231120 is 2113212210221.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12201221231092 and 12201221231101.

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, 320339 + ... + 4950258.

It is an arithmetic number, because the mean of its divisors is an integer number (373506197868).

Almost surely, 2^{12201221231120} is an apocalyptic number.

12201221231120 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 12201221231120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14940247914720).

12201221231120 is an abundant number, since it is smaller than the sum of its proper divisors (17679274598320).

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

12201221231120 is a wasteful number, since it uses less digits than its factorization.

12201221231120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5272152 (or 5272146 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 12201221231120 its reverse (2113212210221), we get a palindrome (14314433441341).

The spelling of 12201221231120 in words is "twelve trillion, two hundred one billion, two hundred twenty-one million, two hundred thirty-one thousand, one hundred twenty".