12205916424 has 96 divisors (see below), whose sum is σ = 35620504920. Its totient is φ = 3753566208.

The previous prime is 12205916417. The next prime is 12205916441. The reversal of 12205916424 is 42461950221.

It is a happy number.

12205916424 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 5 + 9 + 1 + 642 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 11541204900 + 664711524 = 107430^2 + 25782^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2934154 + ... + 2938310.

Almost surely, 2^12205916424 is an apocalyptic number.

It is an amenable number.

12205916424 is an abundant number, since it is smaller than the sum of its proper divisors (23414588496).

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

12205916424 is a wasteful number, since it uses less digits than its factorization.

12205916424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7319 (or 7312 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 12205916424 in words is "twelve billion, two hundred five million, nine hundred sixteen thousand, four hundred twenty-four".