12221102100000 has 576 divisors, whose sum is σ = 43570531307520. Its totient is φ = 2987798400000.

The previous prime is 12221102099959. The next prime is 12221102100043. The reversal of 12221102100000 is 120112221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 176665419 + ... + 176734581.

It is an arithmetic number, because the mean of its divisors is an integer number (75643283520).

Almost surely, 2^{12221102100000} is an apocalyptic number.

12221102100000 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 12221102100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21785265653760).

12221102100000 is an abundant number, since it is smaller than the sum of its proper divisors (31349429207520).

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

12221102100000 is an equidigital number, since it uses as much as digits as its factorization.

12221102100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69251 (or 69223 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12221102100000 its reverse (120112221), we get a palindrome (12221222212221).

The spelling of 12221102100000 in words is "twelve trillion, two hundred twenty-one billion, one hundred two million, one hundred thousand".