12216550224 has 20 divisors (see below), whose sum is σ = 31559421536. Its totient is φ = 4072183392.

The previous prime is 12216550193. The next prime is 12216550231. The reversal of 12216550224 is 42205561221.

It is a junction number, because it is equal to n+sod(n) for n = 12216550191 and 12216550200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127255684 + ... + 127255779.

Almost surely, 2^12216550224 is an apocalyptic number.

It is an amenable number.

12216550224 is an abundant number, since it is smaller than the sum of its proper divisors (19342871312).

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

12216550224 is a wasteful number, since it uses less digits than its factorization.

12216550224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254511474 (or 254511468 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 12216550224 in words is "twelve billion, two hundred sixteen million, five hundred fifty thousand, two hundred twenty-four".