12215412400000 has 192 divisors, whose sum is σ = 30482892563760. Its totient is φ = 4875627520000.

The previous prime is 12215412399893. The next prime is 12215412400007. The reversal of 12215412400000 is 421451221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215412400007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186767304 + ... + 186832696.

Almost surely, 2^{12215412400000} is an apocalyptic number.

12215412400000 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 12215412400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15241446281880).

12215412400000 is an abundant number, since it is smaller than the sum of its proper divisors (18267480163760).

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

12215412400000 is an frugal number, since it uses more digits than its factorization.

12215412400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65899 (or 65867 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 12215412400000 its reverse (421451221), we get a palindrome (12215833851221).

The spelling of 12215412400000 in words is "twelve trillion, two hundred fifteen billion, four hundred twelve million, four hundred thousand".