12213966379 has 4 divisors (see below), whose sum is σ = 12511868040. Its totient is φ = 11916064720.

The previous prime is 12213966307. The next prime is 12213966389. The reversal of 12213966379 is 97366931221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12213966379 - 2¹³ = 12213958187 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12213966389) 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, 148950769 + ... + 148950850.

It is an arithmetic number, because the mean of its divisors is an integer number (3127967010).

Almost surely, 2^12213966379 is an apocalyptic number.

12213966379 is a deficient number, since it is larger than the sum of its proper divisors (297901661).

12213966379 is an equidigital number, since it uses as much as digits as its factorization.

12213966379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297901660.

The product of its digits is 734832, while the sum is 49.

The spelling of 12213966379 in words is "twelve billion, two hundred thirteen million, nine hundred sixty-six thousand, three hundred seventy-nine".