12224219 has 4 divisors (see below), whose sum is σ = 13970544. Its totient is φ = 10477896.

The previous prime is 12224213. The next prime is 12224221. The reversal of 12224219 is 91242221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91242221 = 7 ⋅13034603.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12224219 is a prime.

It is a super-2 number, since 2×12224219² = 298863060319922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12224194 and 12224203.

It is not an unprimeable number, because it can be changed into a prime (12224213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 873152 + ... + 873165.

It is an arithmetic number, because the mean of its divisors is an integer number (3492636).

Almost surely, 2^12224219 is an apocalyptic number.

12224219 is a deficient number, since it is larger than the sum of its proper divisors (1746325).

12224219 is an equidigital number, since it uses as much as digits as its factorization.

12224219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746324.

The product of its digits is 576, while the sum is 23.

The square root of 12224219 is about 3496.3150601741. The cubic root of 12224219 is about 230.3599844805.

The spelling of 12224219 in words is "twelve million, two hundred twenty-four thousand, two hundred nineteen".