121324800 has 216 divisors, whose sum is σ = 410598720. Its totient is φ = 31539200.

The previous prime is 121324783. The next prime is 121324807. The reversal of 121324800 is 8423121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121324807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1363156 + ... + 1363244.

It is an arithmetic number, because the mean of its divisors is an integer number (1900920).

Almost surely, 2^121324800 is an apocalyptic number.

121324800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121324800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205299360).

121324800 is an abundant number, since it is smaller than the sum of its proper divisors (289273920).

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

121324800 is an equidigital number, since it uses as much as digits as its factorization.

121324800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 121324800 is about 11014.7537421406. The cubic root of 121324800 is about 495.0509079364.

Adding to 121324800 its reverse (8423121), we get a palindrome (129747921).

The spelling of 121324800 in words is "one hundred twenty-one million, three hundred twenty-four thousand, eight hundred".