12222022 has 4 divisors (see below), whose sum is σ = 18333036. Its totient is φ = 6111010.

The previous prime is 12222013. The next prime is 12222047. The reversal of 12222022 is 22022221.

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

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 12221993 and 12222011.

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, 3055504 + ... + 3055507.

It is an arithmetic number, because the mean of its divisors is an integer number (4583259).

Almost surely, 2^12222022 is an apocalyptic number.

12222022 is a deficient number, since it is larger than the sum of its proper divisors (6111014).

12222022 is an equidigital number, since it uses as much as digits as its factorization.

12222022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6111013.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 12222022 is about 3496.0008581235. Note that the first 3 decimals coincide. The cubic root of 12222022 is about 230.3461831569.

Adding to 12222022 its reverse (22022221), we get a palindrome (34244243).

The spelling of 12222022 in words is "twelve million, two hundred twenty-two thousand, twenty-two".