12218485 has 8 divisors (see below), whose sum is σ = 14692536. Its totient is φ = 9754560.

The previous prime is 12218443. The next prime is 12218489. The reversal of 12218485 is 58481221.

It can be written as a sum of positive squares in 4 ways, for example, as 101124 + 12117361 = 318^2 + 3481^2 .

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

It is not a de Polignac number, because 12218485 - 2¹¹ = 12216437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12218489) 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, 447 + ... + 4963.

It is an arithmetic number, because the mean of its divisors is an integer number (1836567).

Almost surely, 2^12218485 is an apocalyptic number.

It is an amenable number.

12218485 is a deficient number, since it is larger than the sum of its proper divisors (2474051).

12218485 is an equidigital number, since it uses as much as digits as its factorization.

12218485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5063.

The product of its digits is 5120, while the sum is 31.

The square root of 12218485 is about 3495.4949577993. The cubic root of 12218485 is about 230.3239606186.

The spelling of 12218485 in words is "twelve million, two hundred eighteen thousand, four hundred eighty-five".