12219346 has 4 divisors (see below), whose sum is σ = 18329022. Its totient is φ = 6109672.

The previous prime is 12219329. The next prime is 12219349. The reversal of 12219346 is 64391221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64391221 = 67 ⋅961063.

It can be written as a sum of positive squares in only one way, i.e., 12173121 + 46225 = 3489^2 + 215^2 .

It is not an unprimeable number, because it can be changed into a prime (12219349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3054835 + ... + 3054838.

Almost surely, 2^12219346 is an apocalyptic number.

12219346 is a deficient number, since it is larger than the sum of its proper divisors (6109676).

12219346 is an equidigital number, since it uses as much as digits as its factorization.

12219346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6109675.

The product of its digits is 2592, while the sum is 28.

The square root of 12219346 is about 3495.6181141538. The cubic root of 12219346 is about 230.3293705711.

The spelling of 12219346 in words is "twelve million, two hundred nineteen thousand, three hundred forty-six".