1218338122 has 8 divisors (see below), whose sum is σ = 1834301700. Its totient is φ = 606904224.

The previous prime is 1218338119. The next prime is 1218338131. The reversal of 1218338122 is 2218338121.

It can be written as a sum of positive squares in 2 ways, for example, as 1185493761 + 32844361 = 34431^2 + 5731^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1131747 + ... + 1132822.

Almost surely, 2^1218338122 is an apocalyptic number.

1218338122 is a deficient number, since it is larger than the sum of its proper divisors (615963578).

1218338122 is a wasteful number, since it uses less digits than its factorization.

1218338122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264840.

The product of its digits is 4608, while the sum is 31.

The square root of 1218338122 is about 34904.7005716995. The cubic root of 1218338122 is about 1068.0443276967.

Subtracting 1218338122 from its reverse (2218338121), we obtain a palindrome (999999999).

It can be divided in two parts, 12183 and 38122, that added together give a palindrome (50305).

The spelling of 1218338122 in words is "one billion, two hundred eighteen million, three hundred thirty-eight thousand, one hundred twenty-two".