12213879 has 8 divisors (see below), whose sum is σ = 16383360. Its totient is φ = 8093496.

The previous prime is 12213863. The next prime is 12213881. The reversal of 12213879 is 97831221.

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

It is not a de Polignac number, because 12213879 - 2⁴ = 12213863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11689 + ... + 12690.

It is an arithmetic number, because the mean of its divisors is an integer number (2047920).

Almost surely, 2^12213879 is an apocalyptic number.

12213879 is a deficient number, since it is larger than the sum of its proper divisors (4169481).

12213879 is a wasteful number, since it uses less digits than its factorization.

12213879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24549.

The product of its digits is 6048, while the sum is 33.

The square root of 12213879 is about 3494.8360476566. The cubic root of 12213879 is about 230.2950152543.

The spelling of 12213879 in words is "twelve million, two hundred thirteen thousand, eight hundred seventy-nine".