12219045 has 8 divisors (see below), whose sum is σ = 19550496. Its totient is φ = 6516816.

The previous prime is 12219019. The next prime is 12219047. The reversal of 12219045 is 54091221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12219045 - 2⁶ = 12218981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12219047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407287 + ... + 407316.

It is an arithmetic number, because the mean of its divisors is an integer number (2443812).

Almost surely, 2^12219045 is an apocalyptic number.

12219045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12219045 is a deficient number, since it is larger than the sum of its proper divisors (7331451).

12219045 is an equidigital number, since it uses as much as digits as its factorization.

12219045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814611.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 12219045 is about 3495.5750599866. The cubic root of 12219045 is about 230.3274793158.

The spelling of 12219045 in words is "twelve million, two hundred nineteen thousand, forty-five".