12412222 has 4 divisors (see below), whose sum is σ = 18618336. Its totient is φ = 6206110.

The previous prime is 12412199. The next prime is 12412237. The reversal of 12412222 is 22221421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22221421 = 67 ⋅331663.

It is a junction number, because it is equal to n+sod(n) for n = 12412196 and 12412205.

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, 3103054 + ... + 3103057.

It is an arithmetic number, because the mean of its divisors is an integer number (4654584).

Almost surely, 2^12412222 is an apocalyptic number.

12412222 is a deficient number, since it is larger than the sum of its proper divisors (6206114).

12412222 is an equidigital number, since it uses as much as digits as its factorization.

12412222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6206113.

The product of its digits is 128, while the sum is 16.

The square root of 12412222 is about 3523.0983523030. The cubic root of 12412222 is about 231.5349259317.

Adding to 12412222 its reverse (22221421), we get a palindrome (34633643).

The spelling of 12412222 in words is "twelve million, four hundred twelve thousand, two hundred twenty-two".