12221101100000 has 288 divisors, whose sum is σ = 34291949674752. Its totient is φ = 4246963200000.

The previous prime is 12221101099993. The next prime is 12221101100009. The reversal of 12221101100000 is 110112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221101100009) 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 47 ways as a sum of consecutive naturals, for example, 21823505 + ... + 22376495.

It is an arithmetic number, because the mean of its divisors is an integer number (119069269704).

Almost surely, 2^{12221101100000} is an apocalyptic number.

12221101100000 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 12221101100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17145974837376).

12221101100000 is an abundant number, since it is smaller than the sum of its proper divisors (22070848574752).

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

12221101100000 is an equidigital number, since it uses as much as digits as its factorization.

12221101100000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553056 (or 553028 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12221101100000 its reverse (110112221), we get a palindrome (12221211212221).

The spelling of 12221101100000 in words is "twelve trillion, two hundred twenty-one billion, one hundred one million, one hundred thousand".