12221246047218 has 16 divisors (see below), whose sum is σ = 26322683794176. Its totient is φ = 3760383399120.

The previous prime is 12221246047163. The next prime is 12221246047223. The reversal of 12221246047218 is 81274064212221.

It is a self number, because there is not a number n which added to its sum of digits gives 12221246047218.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78341320738 + ... + 78341320893.

It is an arithmetic number, because the mean of its divisors is an integer number (1645167737136).

Almost surely, 2^{12221246047218} is an apocalyptic number.

12221246047218 is an abundant number, since it is smaller than the sum of its proper divisors (14101437746958).

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

12221246047218 is a wasteful number, since it uses less digits than its factorization.

12221246047218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156682641649.

The product of its (nonzero) digits is 172032, while the sum is 42.

The spelling of 12221246047218 in words is "twelve trillion, two hundred twenty-one billion, two hundred forty-six million, forty-seven thousand, two hundred eighteen".