12215372640000 has 180 divisors, whose sum is σ = 40625378948616. Its totient is φ = 3257432576000.

The previous prime is 12215372639993. The next prime is 12215372640011. The reversal of 12215372640000 is 4627351221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12244347 + ... + 13204346.

Almost surely, 2^{12215372640000} is an apocalyptic number.

12215372640000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12215372640000 is an abundant number, since it is smaller than the sum of its proper divisors (28410006308616).

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

12215372640000 is an frugal number, since it uses more digits than its factorization.

12215372640000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25448732 (or 25448703 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

Adding to 12215372640000 its reverse (4627351221), we get a palindrome (12219999991221).

The spelling of 12215372640000 in words is "twelve trillion, two hundred fifteen billion, three hundred seventy-two million, six hundred forty thousand".