12218646529 has 8 divisors (see below), whose sum is σ = 12527585280. Its totient is φ = 11910228000.

The previous prime is 12218646509. The next prime is 12218646571. The reversal of 12218646529 is 92564681221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12218646529 - 2¹³ = 12218638337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12218646509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82269 + ... + 176650.

It is an arithmetic number, because the mean of its divisors is an integer number (1565948160).

Almost surely, 2^12218646529 is an apocalyptic number.

It is an amenable number.

12218646529 is a deficient number, since it is larger than the sum of its proper divisors (308938751).

12218646529 is a wasteful number, since it uses less digits than its factorization.

12218646529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260111.

The product of its digits is 414720, while the sum is 46.

The spelling of 12218646529 in words is "twelve billion, two hundred eighteen million, six hundred forty-six thousand, five hundred twenty-nine".