121330200100 has 18 divisors (see below), whose sum is σ = 263286534434. Its totient is φ = 48532080000.

The previous prime is 121330200097. The next prime is 121330200157. The reversal of 121330200100 is 1002033121.

It can be written as a sum of positive squares in 3 ways, for example, as 103673124 + 121226526976 = 10182^2 + 348176^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 606650901 + ... + 606651100.

Almost surely, 2^121330200100 is an apocalyptic number.

121330200100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121330200100 is an abundant number, since it is smaller than the sum of its proper divisors (141956334334).

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

121330200100 is a wasteful number, since it uses less digits than its factorization.

121330200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213302015 (or 1213302008 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 121330200100 its reverse (1002033121), we get a palindrome (122332233221).

The spelling of 121330200100 in words is "one hundred twenty-one billion, three hundred thirty million, two hundred thousand, one hundred".