12216630666 has 16 divisors (see below), whose sum is σ = 24497733600. Its totient is φ = 4061464848.

The previous prime is 12216630649. The next prime is 12216630667. The reversal of 12216630666 is 66603661221.

It is not an unprimeable number, because it can be changed into a prime (12216630667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2683881 + ... + 2688428.

It is an arithmetic number, because the mean of its divisors is an integer number (1531108350).

Almost surely, 2^12216630666 is an apocalyptic number.

12216630666 is an abundant number, since it is smaller than the sum of its proper divisors (12281102934).

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

12216630666 is a wasteful number, since it uses less digits than its factorization.

12216630666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5372693.

The product of its (nonzero) digits is 93312, while the sum is 39.

The spelling of 12216630666 in words is "twelve billion, two hundred sixteen million, six hundred thirty thousand, six hundred sixty-six".