12016222 has 4 divisors (see below), whose sum is σ = 18024336. Its totient is φ = 6008110.

The previous prime is 12016219. The next prime is 12016241. The reversal of 12016222 is 22261021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22261021 = 2083 ⋅10687.

It is a junction number, because it is equal to n+sod(n) for n = 12016196 and 12016205.

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, 3004054 + ... + 3004057.

It is an arithmetic number, because the mean of its divisors is an integer number (4506084).

Almost surely, 2^12016222 is an apocalyptic number.

12016222 is a deficient number, since it is larger than the sum of its proper divisors (6008114).

12016222 is an equidigital number, since it uses as much as digits as its factorization.

12016222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6008113.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 12016222 is about 3466.4422683783. The cubic root of 12016222 is about 229.0459662500.

Adding to 12016222 its reverse (22261021), we get a palindrome (34277243).

The spelling of 12016222 in words is "twelve million, sixteen thousand, two hundred twenty-two".