12223456666 has 8 divisors (see below), whose sum is σ = 18360407520. Its totient is φ = 6103320828.

The previous prime is 12223456633. The next prime is 12223456673. The reversal of 12223456666 is 66665432221.

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

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4201936 + ... + 4204843.

It is an arithmetic number, because the mean of its divisors is an integer number (2295050940).

Almost surely, 2^12223456666 is an apocalyptic number.

12223456666 is a deficient number, since it is larger than the sum of its proper divisors (6136950854).

12223456666 is an equidigital number, since it uses as much as digits as its factorization.

12223456666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8407508.

The product of its digits is 622080, while the sum is 43.

Adding to 12223456666 its reverse (66665432221), we get a palindrome (78888888887).

The spelling of 12223456666 in words is "twelve billion, two hundred twenty-three million, four hundred fifty-six thousand, six hundred sixty-six".