121210321200 has 60 divisors (see below), whose sum is σ = 388277066088. Its totient is φ = 32322752000.

The previous prime is 121210321171. The next prime is 121210321217. The reversal of 121210321200 is 2123012121.

121210321200 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121210321200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50503101 + ... + 50505500.

Almost surely, 2^121210321200 is an apocalyptic number.

121210321200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121210321200 is an abundant number, since it is smaller than the sum of its proper divisors (267066744888).

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

121210321200 is a wasteful number, since it uses less digits than its factorization.

121210321200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101008622 (or 101008611 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 121210321200 its reverse (2123012121), we get a palindrome (123333333321).

The spelling of 121210321200 in words is "one hundred twenty-one billion, two hundred ten million, three hundred twenty-one thousand, two hundred".