121200102112200 has 192 divisors, whose sum is σ = 381261168140160. Its totient is φ = 31844310865920.

The previous prime is 121200102112169. The next prime is 121200102112211. The reversal of 121200102112200 is 2211201002121.

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 121200102112200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40923822 + ... + 43785378.

It is an arithmetic number, because the mean of its divisors is an integer number (1985735250730).

Almost surely, 2^{121200102112200} is an apocalyptic number.

121200102112200 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 121200102112200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190630584070080).

121200102112200 is an abundant number, since it is smaller than the sum of its proper divisors (260061066027960).

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

121200102112200 is a wasteful number, since it uses less digits than its factorization.

121200102112200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862616 (or 2862607 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121200102112200 its reverse (2211201002121), we get a palindrome (123411303114321).

The spelling of 121200102112200 in words is "one hundred twenty-one trillion, two hundred billion, one hundred two million, one hundred twelve thousand, two hundred".