121010120100200 has 48 divisors (see below), whose sum is σ = 282681934683360. Its totient is φ = 48174644952000.

The previous prime is 121010120100173. The next prime is 121010120100203. The reversal of 121010120100200 is 2001021010121.

It is not an unprimeable number, because it can be changed into a prime (121010120100203) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1433726996 + ... + 1433811395.

It is an arithmetic number, because the mean of its divisors is an integer number (5889206972570).

Almost surely, 2^{121010120100200} is an apocalyptic number.

121010120100200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121010120100200 is an abundant number, since it is smaller than the sum of its proper divisors (161671814583160).

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

121010120100200 is a wasteful number, since it uses less digits than its factorization.

121010120100200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2867538618 (or 2867538609 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121010120100200 its reverse (2001021010121), we get a palindrome (123011141110321).

The spelling of 121010120100200 in words is "one hundred twenty-one trillion, ten billion, one hundred twenty million, one hundred thousand, two hundred".