12442219 has 2 divisors, whose sum is σ = 12442220. Its totient is φ = 12442218.

The previous prime is 12442217. The next prime is 12442223. The reversal of 12442219 is 91224421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12442219 - 2¹ = 12442217 is a prime.

It is a super-2 number, since 2×12442219² = 309617627287922, which contains 22 as substring.

Together with 12442217, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12442193 and 12442202.

It is not a weakly prime, because it can be changed into another prime (12442217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6221109 + 6221110.

It is an arithmetic number, because the mean of its divisors is an integer number (6221110).

Almost surely, 2^12442219 is an apocalyptic number.

12442219 is a deficient number, since it is larger than the sum of its proper divisors (1).

12442219 is an equidigital number, since it uses as much as digits as its factorization.

12442219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 25.

The square root of 12442219 is about 3527.3529735483. The cubic root of 12442219 is about 231.7212950781.

The spelling of 12442219 in words is "twelve million, four hundred forty-two thousand, two hundred nineteen".