121118312 has 64 divisors (see below), whose sum is σ = 277440000. Its totient is φ = 48413376.

The previous prime is 121118281. The next prime is 121118317. The reversal of 121118312 is 213811121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121118317) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 70439 + ... + 72137.

It is an arithmetic number, because the mean of its divisors is an integer number (4335000).

Almost surely, 2^121118312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121118312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138720000).

121118312 is an abundant number, since it is smaller than the sum of its proper divisors (156321688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121118312 is a wasteful number, since it uses less digits than its factorization.

121118312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798 (or 1794 counting only the distinct ones).

The product of its digits is 96, while the sum is 20.

The square root of 121118312 is about 11005.3765042365. The cubic root of 121118312 is about 494.7698988356.

Adding to 121118312 its reverse (213811121), we get a palindrome (334929433).

The spelling of 121118312 in words is "one hundred twenty-one million, one hundred eighteen thousand, three hundred twelve".