12218002 has 8 divisors (see below), whose sum is σ = 19405116. Its totient is φ = 5749632.

The previous prime is 12217993. The next prime is 12218027. The reversal of 12218002 is 20081221.

It can be written as a sum of positive squares in 2 ways, for example, as 12033961 + 184041 = 3469^2 + 429^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 179643 + ... + 179710.

Almost surely, 2^12218002 is an apocalyptic number.

12218002 is a deficient number, since it is larger than the sum of its proper divisors (7187114).

12218002 is a wasteful number, since it uses less digits than its factorization.

12218002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359372.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 12218002 is about 3495.4258681883. The cubic root of 12218002 is about 230.3209256559.

Adding to 12218002 its reverse (20081221), we get a palindrome (32299223).

The spelling of 12218002 in words is "twelve million, two hundred eighteen thousand, two".