12219434 has 4 divisors (see below), whose sum is σ = 18329154. Its totient is φ = 6109716.

The previous prime is 12219421. The next prime is 12219437. The reversal of 12219434 is 43491221.

12219434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 6943225 + 5276209 = 2635^2 + 2297^2 .

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12219437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3054857 + ... + 3054860.

Almost surely, 2^12219434 is an apocalyptic number.

12219434 is a deficient number, since it is larger than the sum of its proper divisors (6109720).

12219434 is an equidigital number, since it uses as much as digits as its factorization.

12219434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6109719.

The product of its digits is 1728, while the sum is 26.

The square root of 12219434 is about 3495.6307013184. The cubic root of 12219434 is about 230.3299234904.

The spelling of 12219434 in words is "twelve million, two hundred nineteen thousand, four hundred thirty-four".