12219305 has 16 divisors (see below), whose sum is σ = 16896000. Its totient is φ = 8309952.

The previous prime is 12219289. The next prime is 12219307. The reversal of 12219305 is 50391221.

It is not a de Polignac number, because 12219305 - 2⁴ = 12219289 is a prime.

It is a super-2 number, since 2×12219305² = 298622829366050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12219307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3071 + ... + 5819.

It is an arithmetic number, because the mean of its divisors is an integer number (1056000).

Almost surely, 2^12219305 is an apocalyptic number.

It is an amenable number.

12219305 is a deficient number, since it is larger than the sum of its proper divisors (4676695).

12219305 is a wasteful number, since it uses less digits than its factorization.

12219305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 12219305 is about 3495.6122496639. The cubic root of 12219305 is about 230.3291129601.

The spelling of 12219305 in words is "twelve million, two hundred nineteen thousand, three hundred five".