121340323200 has 384 divisors, whose sum is σ = 427021776000. Its totient is φ = 30193827840.

The previous prime is 121340323193. The next prime is 121340323211. The reversal of 121340323200 is 2323043121.

It is a tau number, because it is divible by the number of its divisors (384).

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 47 ways as a sum of consecutive naturals, for example, 12215836 + ... + 12225764.

It is an arithmetic number, because the mean of its divisors is an integer number (1112035875).

Almost surely, 2^121340323200 is an apocalyptic number.

121340323200 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 121340323200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213510888000).

121340323200 is an abundant number, since it is smaller than the sum of its proper divisors (305681452800).

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

121340323200 is a wasteful number, since it uses less digits than its factorization.

121340323200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10042 (or 10025 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 121340323200 its reverse (2323043121), we get a palindrome (123663366321).

The spelling of 121340323200 in words is "one hundred twenty-one billion, three hundred forty million, three hundred twenty-three thousand, two hundred".