12210221221120 has 72 divisors (see below), whose sum is σ = 31497087524616. Its totient is φ = 4508389367808.

The previous prime is 12210221221103. The next prime is 12210221221129. The reversal of 12210221221120 is 2112212201221.

It can be written as a sum of positive squares in 4 ways, for example, as 236849635584 + 11973371585536 = 486672^2 + 3460256^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210221221129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366877027 + ... + 366910306.

It is an arithmetic number, because the mean of its divisors is an integer number (437459548953).

Almost surely, 2^{12210221221120} is an apocalyptic number.

12210221221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12210221221120 is an abundant number, since it is smaller than the sum of its proper divisors (19286866303496).

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

12210221221120 is an equidigital number, since it uses as much as digits as its factorization.

12210221221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733787367 (or 733787353 counting only the distinct ones).

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

Adding to 12210221221120 its reverse (2112212201221), we get a palindrome (14322433422341).

The spelling of 12210221221120 in words is "twelve trillion, two hundred ten billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty".