12221352788784 has 40 divisors (see below), whose sum is σ = 31780913010432. Its totient is φ = 4046805556800.

The previous prime is 12221352788783. The next prime is 12221352788851. The reversal of 12221352788784 is 48788725312221.

It is a super-3 number, since 3×12221352788784³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (12221352788783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843077244 + ... + 843091739.

Almost surely, 2^{12221352788784} is an apocalyptic number.

It is an amenable number.

12221352788784 is an abundant number, since it is smaller than the sum of its proper divisors (19559560221648).

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

12221352788784 is a wasteful number, since it uses less digits than its factorization.

12221352788784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686169145 (or 1686169139 counting only the distinct ones).

The product of its digits is 24084480, while the sum is 60.

The spelling of 12221352788784 in words is "twelve trillion, two hundred twenty-one billion, three hundred fifty-two million, seven hundred eighty-eight thousand, seven hundred eighty-four".