12011221200000 has 768 divisors, whose sum is σ = 44681363959680. Its totient is φ = 2832998400000.

The previous prime is 12011221199977. The next prime is 12011221200019. The reversal of 12011221200000 is 212211021.

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, 488387704 + ... + 488412296.

Almost surely, 2^{12011221200000} is an apocalyptic number.

12011221200000 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 12011221200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22340681979840).

12011221200000 is an abundant number, since it is smaller than the sum of its proper divisors (32670142759680).

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

12011221200000 is an equidigital number, since it uses as much as digits as its factorization.

12011221200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24683 (or 24651 counting only the distinct ones).

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

Adding to 12011221200000 its reverse (212211021), we get a palindrome (12011433411021).

It can be divided in two parts, 12011221 and 200000, that added together give a palindrome (12211221).

The spelling of 12011221200000 in words is "twelve trillion, eleven billion, two hundred twenty-one million, two hundred thousand".