121117144 has 16 divisors (see below), whose sum is σ = 227296800. Its totient is φ = 60504672.

The previous prime is 121117133. The next prime is 121117177. The reversal of 121117144 is 441711121.

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, 3777 + ... + 16015.

It is an arithmetic number, because the mean of its divisors is an integer number (14206050).

Almost surely, 2^121117144 is an apocalyptic number.

It is an amenable number.

121117144 is a deficient number, since it is larger than the sum of its proper divisors (106179656).

121117144 is a wasteful number, since it uses less digits than its factorization.

121117144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13482 (or 13478 counting only the distinct ones).

The product of its digits is 224, while the sum is 22.

The square root of 121117144 is about 11005.3234391362. The cubic root of 121117144 is about 494.7683083987.

Adding to 121117144 its reverse (441711121), we get a palindrome (562828265).

The spelling of 121117144 in words is "one hundred twenty-one million, one hundred seventeen thousand, one hundred forty-four".