12108279 has 4 divisors (see below), whose sum is σ = 16144376. Its totient is φ = 8072184.

The previous prime is 12108277. The next prime is 12108319. The reversal of 12108279 is 97280121.

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

It is not a de Polignac number, because 12108279 - 2¹ = 12108277 is a prime.

It is a super-2 number, since 2×12108279² = 293220840683682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12108277) 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, 2018044 + ... + 2018049.

It is an arithmetic number, because the mean of its divisors is an integer number (4036094).

Almost surely, 2^12108279 is an apocalyptic number.

12108279 is a deficient number, since it is larger than the sum of its proper divisors (4036097).

12108279 is an equidigital number, since it uses as much as digits as its factorization.

12108279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4036096.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12108279 is about 3479.6952452765. The cubic root of 12108279 is about 229.6293905385.

The spelling of 12108279 in words is "twelve million, one hundred eight thousand, two hundred seventy-nine".