12443621224 has 32 divisors (see below), whose sum is σ = 23516947080. Its totient is φ = 6172493824.

The previous prime is 12443621213. The next prime is 12443621231. The reversal of 12443621224 is 42212634421.

It can be written as a sum of positive squares in 4 ways, for example, as 6531549124 + 5912072100 = 80818^2 + 76890^2 .

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, 2580864 + ... + 2585680.

Almost surely, 2^12443621224 is an apocalyptic number.

It is an amenable number.

12443621224 is a deficient number, since it is larger than the sum of its proper divisors (11073325856).

12443621224 is a wasteful number, since it uses less digits than its factorization.

12443621224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7317 (or 7313 counting only the distinct ones).

The product of its digits is 18432, while the sum is 31.

The spelling of 12443621224 in words is "twelve billion, four hundred forty-three million, six hundred twenty-one thousand, two hundred twenty-four".