12220465 has 8 divisors (see below), whose sum is σ = 14883840. Its totient is φ = 9630192.

The previous prime is 12220457. The next prime is 12220489. The reversal of 12220465 is 56402221.

12220465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12220465 - 2³ = 12220457 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17905 + ... + 18574.

It is an arithmetic number, because the mean of its divisors is an integer number (1860480).

Almost surely, 2^12220465 is an apocalyptic number.

It is an amenable number.

12220465 is a deficient number, since it is larger than the sum of its proper divisors (2663375).

12220465 is an equidigital number, since it uses as much as digits as its factorization.

12220465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36551.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 12220465 is about 3495.7781680192. The cubic root of 12220465 is about 230.3364012447.

Adding to 12220465 its reverse (56402221), we get a palindrome (68622686).

The spelling of 12220465 in words is "twelve million, two hundred twenty thousand, four hundred sixty-five".