12218036 has 24 divisors (see below), whose sum is σ = 22748040. Its totient is φ = 5722112.

The previous prime is 12218033. The next prime is 12218051. The reversal of 12218036 is 63081221.

It can be written as a sum of positive squares in 4 ways, for example, as 4622500 + 7595536 = 2150^2 + 2756^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12218033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23750 + ... + 24258.

It is an arithmetic number, because the mean of its divisors is an integer number (947835).

Almost surely, 2^12218036 is an apocalyptic number.

It is an amenable number.

12218036 is a deficient number, since it is larger than the sum of its proper divisors (10530004).

12218036 is a wasteful number, since it uses less digits than its factorization.

12218036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883 (or 881 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 12218036 is about 3495.4307316839. The cubic root of 12218036 is about 230.3211392998.

Adding to 12218036 its reverse (63081221), we get a palindrome (75299257).

The spelling of 12218036 in words is "twelve million, two hundred eighteen thousand, thirty-six".