12216534445466 has 32 divisors (see below), whose sum is σ = 20633358977280. Its totient is φ = 5382530360064.

The previous prime is 12216534445333. The next prime is 12216534445477. The reversal of 12216534445466 is 66454443561221.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20006351 + ... + 20607938.

It is an arithmetic number, because the mean of its divisors is an integer number (644792468040).

Almost surely, 2^{12216534445466} is an apocalyptic number.

12216534445466 is a deficient number, since it is larger than the sum of its proper divisors (8416824531814).

12216534445466 is a wasteful number, since it uses less digits than its factorization.

12216534445466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40614830.

The product of its digits is 16588800, while the sum is 53.

The spelling of 12216534445466 in words is "twelve trillion, two hundred sixteen billion, five hundred thirty-four million, four hundred forty-five thousand, four hundred sixty-six".