12216566215602 has 48 divisors (see below), whose sum is σ = 30251630328192. Its totient is φ = 3490322250240.

The previous prime is 12216566215591. The next prime is 12216566215621. The reversal of 12216566215602 is 20651266561221.

12216566215602 is a `hidden beast` number, since 1 + 2 + 2 + 1 + 6 + 5 + 66 + 21 + 560 + 2 = 666.

12216566215602 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1814827 + ... + 5265617.

It is an arithmetic number, because the mean of its divisors is an integer number (630242298504).

Almost surely, 2^{12216566215602} is an apocalyptic number.

12216566215602 is an abundant number, since it is smaller than the sum of its proper divisors (18035064112590).

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

12216566215602 is a wasteful number, since it uses less digits than its factorization.

12216566215602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3478903 (or 3478900 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 12216566215602 in words is "twelve trillion, two hundred sixteen billion, five hundred sixty-six million, two hundred fifteen thousand, six hundred two".