121201200200 has 144 divisors (see below), whose sum is σ = 295490462400. Its totient is φ = 46228969600.

The previous prime is 121201200191. The next prime is 121201200233. The reversal of 121201200200 is 2002102121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 37980605 + ... + 37983795.

It is an arithmetic number, because the mean of its divisors is an integer number (2052017100).

Almost surely, 2^121201200200 is an apocalyptic number.

121201200200 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 121201200200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147745231200).

121201200200 is an abundant number, since it is smaller than the sum of its proper divisors (174289262200).

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

121201200200 is a wasteful number, since it uses less digits than its factorization.

121201200200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3612 (or 3580 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 121201200200 its reverse (2002102121), we get a palindrome (123203302321).

The spelling of 121201200200 in words is "one hundred twenty-one billion, two hundred one million, two hundred thousand, two hundred".