12022442 has 4 divisors (see below), whose sum is σ = 18033666. Its totient is φ = 6011220.

The previous prime is 12022441. The next prime is 12022477. The reversal of 12022442 is 24422021.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 7230721 + 4791721 = 2689^2 + 2189^2 .

It is a super-2 number, since 2×12022442² = 289078223286728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12022442.

It is not an unprimeable number, because it can be changed into a prime (12022441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3005609 + ... + 3005612.

Almost surely, 2^12022442 is an apocalyptic number.

12022442 is a deficient number, since it is larger than the sum of its proper divisors (6011224).

12022442 is an equidigital number, since it uses as much as digits as its factorization.

12022442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6011223.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 12022442 is about 3467.3393257655. The cubic root of 12022442 is about 229.0854800606.

Adding to 12022442 its reverse (24422021), we get a palindrome (36444463).

The spelling of 12022442 in words is "twelve million, twenty-two thousand, four hundred forty-two".