121130200100 has 216 divisors, whose sum is σ = 336302225280. Its totient is φ = 37519130880.

The previous prime is 121130200027. The next prime is 121130200117. The reversal of 121130200100 is 1002031121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2973671 + ... + 3014129.

Almost surely, 2^121130200100 is an apocalyptic number.

121130200100 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 121130200100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168151112640).

121130200100 is an abundant number, since it is smaller than the sum of its proper divisors (215172025180).

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

121130200100 is a wasteful number, since it uses less digits than its factorization.

121130200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40547 (or 40533 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 121130200100 its reverse (1002031121), we get a palindrome (122132231221).

The spelling of 121130200100 in words is "one hundred twenty-one billion, one hundred thirty million, two hundred thousand, one hundred".