121244120 has 16 divisors (see below), whose sum is σ = 272799360. Its totient is φ = 48497632.

The previous prime is 121244087. The next prime is 121244129. The reversal of 121244120 is 21442121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121244129) 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 3 ways as a sum of consecutive naturals, for example, 1515512 + ... + 1515591.

It is an arithmetic number, because the mean of its divisors is an integer number (17049960).

Almost surely, 2^121244120 is an apocalyptic number.

121244120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121244120 is an abundant number, since it is smaller than the sum of its proper divisors (151555240).

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

121244120 is a wasteful number, since it uses less digits than its factorization.

121244120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3031114 (or 3031110 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 121244120 is about 11011.0907724893. The cubic root of 121244120 is about 494.9411486677.

Adding to 121244120 its reverse (21442121), we get a palindrome (142686241).

The spelling of 121244120 in words is "one hundred twenty-one million, two hundred forty-four thousand, one hundred twenty".