121113220200 has 192 divisors, whose sum is σ = 429253776000. Its totient is φ = 27672253440.

The previous prime is 121113220199. The next prime is 121113220219. The reversal of 121113220200 is 2022311121.

121113220200 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 121113220200.

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, 16750186 + ... + 16757414.

It is an arithmetic number, because the mean of its divisors is an integer number (2235696750).

Almost surely, 2^121113220200 is an apocalyptic number.

121113220200 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 121113220200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214626888000).

121113220200 is an abundant number, since it is smaller than the sum of its proper divisors (308140555800).

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

121113220200 is a wasteful number, since it uses less digits than its factorization.

121113220200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11244 (or 11235 counting only the distinct ones).

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

Adding to 121113220200 its reverse (2022311121), we get a palindrome (123135531321).

The spelling of 121113220200 in words is "one hundred twenty-one billion, one hundred thirteen million, two hundred twenty thousand, two hundred".