12210221112120 has 320 divisors, whose sum is σ = 41585102507520. Its totient is φ = 3213028083456.

The previous prime is 12210221112073. The next prime is 12210221112137. The reversal of 12210221112120 is 2121112201221.

12210221112120 is a `hidden beast` number, since 1 + 2 + 210 + 221 + 112 + 120 = 666.

It is a super-3 number, since 3×12210221112120³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12210221112093 and 12210221112102.

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 79 ways as a sum of consecutive naturals, for example, 94378117 + ... + 94507403.

It is an arithmetic number, because the mean of its divisors is an integer number (129953445336).

Almost surely, 2^{12210221112120} is an apocalyptic number.

12210221112120 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 12210221112120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20792551253760).

12210221112120 is an abundant number, since it is smaller than the sum of its proper divisors (29374881395400).

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

12210221112120 is a wasteful number, since it uses less digits than its factorization.

12210221112120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129696 (or 129683 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12210221112120 its reverse (2121112201221), we get a palindrome (14331333313341).

The spelling of 12210221112120 in words is "twelve trillion, two hundred ten billion, two hundred twenty-one million, one hundred twelve thousand, one hundred twenty".