121340235200 has 168 divisors, whose sum is σ = 317437727328. Its totient is φ = 45549137920.

The previous prime is 121340235199. The next prime is 121340235209. The reversal of 121340235200 is 2532043121.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121340235209) 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 23 ways as a sum of consecutive naturals, for example, 1919294 + ... + 1981506.

Almost surely, 2^121340235200 is an apocalyptic number.

121340235200 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 121340235200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158718863664).

121340235200 is an abundant number, since it is smaller than the sum of its proper divisors (196097492128).

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

121340235200 is a wasteful number, since it uses less digits than its factorization.

121340235200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62311 (or 62296 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 121340235200 its reverse (2532043121), we get a palindrome (123872278321).

The spelling of 121340235200 in words is "one hundred twenty-one billion, three hundred forty million, two hundred thirty-five thousand, two hundred".