121200202202200 has 192 divisors, whose sum is σ = 315775283418720. Its totient is φ = 42873606144000.

The previous prime is 121200202202159. The next prime is 121200202202221. The reversal of 121200202202200 is 2202202002121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 442760574 + ... + 443034226.

Almost surely, 2^{121200202202200} is an apocalyptic number.

121200202202200 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 121200202202200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157887641709360).

121200202202200 is an abundant number, since it is smaller than the sum of its proper divisors (194575081216520).

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

121200202202200 is a wasteful number, since it uses less digits than its factorization.

121200202202200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279158 (or 279149 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 121200202202200 its reverse (2202202002121), we get a palindrome (123402404204321).

The spelling of 121200202202200 in words is "one hundred twenty-one trillion, two hundred billion, two hundred two million, two hundred two thousand, two hundred".