12222479 has 4 divisors (see below), whose sum is σ = 12232080. Its totient is φ = 12212880.

The previous prime is 12222461. The next prime is 12222517. The reversal of 12222479 is 97422221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12222479 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222979) 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, 2534 + ... + 5555.

It is an arithmetic number, because the mean of its divisors is an integer number (3058020).

Almost surely, 2^12222479 is an apocalyptic number.

12222479 is a deficient number, since it is larger than the sum of its proper divisors (9601).

12222479 is an equidigital number, since it uses as much as digits as its factorization.

12222479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9600.

The product of its digits is 4032, while the sum is 29.

The square root of 12222479 is about 3496.0662179084. The cubic root of 12222479 is about 230.3490541192.

The spelling of 12222479 in words is "twelve million, two hundred twenty-two thousand, four hundred seventy-nine".