12665222 has 4 divisors (see below), whose sum is σ = 18997836. Its totient is φ = 6332610.

The previous prime is 12665207. The next prime is 12665243. The reversal of 12665222 is 22256621.

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

It is a junction number, because it is equal to n+sod(n) for n = 12665191 and 12665200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3166304 + ... + 3166307.

It is an arithmetic number, because the mean of its divisors is an integer number (4749459).

Almost surely, 2^12665222 is an apocalyptic number.

12665222 is a deficient number, since it is larger than the sum of its proper divisors (6332614).

12665222 is an equidigital number, since it uses as much as digits as its factorization.

12665222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6332613.

The product of its digits is 2880, while the sum is 26.

The square root of 12665222 is about 3558.8231200778. The cubic root of 12665222 is about 233.0974927713.

The spelling of 12665222 in words is "twelve million, six hundred sixty-five thousand, two hundred twenty-two".