12121118 has 8 divisors (see below), whose sum is σ = 18199512. Its totient is φ = 6054616.

The previous prime is 12121103. The next prime is 12121121. The reversal of 12121118 is 81112121.

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

It is a junction number, because it is equal to n+sod(n) for n = 12121096 and 12121105.

It is a congruent number.

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, 296 + ... + 4932.

It is an arithmetic number, because the mean of its divisors is an integer number (2274939).

Almost surely, 2^12121118 is an apocalyptic number.

12121118 is a deficient number, since it is larger than the sum of its proper divisors (6078394).

12121118 is a wasteful number, since it uses less digits than its factorization.

12121118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5946.

The product of its digits is 32, while the sum is 17.

The square root of 12121118 is about 3481.5396019577. The cubic root of 12121118 is about 229.7105242904.

Adding to 12121118 its reverse (81112121), we get a palindrome (93233239).

The spelling of 12121118 in words is "twelve million, one hundred twenty-one thousand, one hundred eighteen".