12218458713 has 4 divisors (see below), whose sum is σ = 16291278288. Its totient is φ = 8145639140.

The previous prime is 12218458691. The next prime is 12218458781. The reversal of 12218458713 is 31785481221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12218458713 - 2¹⁰ = 12218457689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12218458313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2036409783 + ... + 2036409788.

It is an arithmetic number, because the mean of its divisors is an integer number (4072819572).

Almost surely, 2^12218458713 is an apocalyptic number.

It is an amenable number.

12218458713 is a deficient number, since it is larger than the sum of its proper divisors (4072819575).

12218458713 is an equidigital number, since it uses as much as digits as its factorization.

12218458713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4072819574.

The product of its digits is 107520, while the sum is 42.

The spelling of 12218458713 in words is "twelve billion, two hundred eighteen million, four hundred fifty-eight thousand, seven hundred thirteen".