12216303576 has 32 divisors (see below), whose sum is σ = 33934177200. Its totient is φ = 4072101120.

The previous prime is 12216303557. The next prime is 12216303577. The reversal of 12216303576 is 67530361221.

12216303576 is a `hidden beast` number, since 1 + 2 + 21 + 63 + 0 + 3 + 576 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12216303576.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12216303577) 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, 28278265 + ... + 28278696.

Almost surely, 2^12216303576 is an apocalyptic number.

It is an amenable number.

12216303576 is an abundant number, since it is smaller than the sum of its proper divisors (21717873624).

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

12216303576 is a wasteful number, since it uses less digits than its factorization.

12216303576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56556976 (or 56556966 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

Adding to 12216303576 its reverse (67530361221), we get a palindrome (79746664797).

The spelling of 12216303576 in words is "twelve billion, two hundred sixteen million, three hundred three thousand, five hundred seventy-six".