122218 has 8 divisors (see below), whose sum is σ = 186948. Its totient is φ = 59904.

The previous prime is 122209. The next prime is 122219. The reversal of 122218 is 812221.

It can be written as a sum of positive squares in 2 ways, for example, as 113569 + 8649 = 337^2 + 93^2 .

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

It is not an unprimeable number, because it can be changed into a prime (122219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471 + ... + 682.

2¹²²²¹⁸ is an apocalyptic number.

122218 is a deficient number, since it is larger than the sum of its proper divisors (64730).

122218 is a wasteful number, since it uses less digits than its factorization.

122218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1208.

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

The square root of 122218 is about 349.5969107415. The cubic root of 122218 is about 49.6262802978.

Adding to 122218 its reverse (812221), we get a palindrome (934439).

The spelling of 122218 in words is "one hundred twenty-two thousand, two hundred eighteen".