121101210200200 has 48 divisors (see below), whose sum is σ = 281932256358180. Its totient is φ = 48376493948160.

The previous prime is 121101210200161. The next prime is 121101210200209. The reversal of 121101210200200 is 2002012101121.

It can be written as a sum of positive squares in 6 ways, for example, as 15645932784036 + 105455277416164 = 3955494^2 + 10269142^2 .

It is a super-2 number, since 2×121101210200200² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121101210200209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 399786547 + ... + 400089346.

Almost surely, 2^{121101210200200} is an apocalyptic number.

121101210200200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121101210200200 is an abundant number, since it is smaller than the sum of its proper divisors (160831046157980).

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

121101210200200 is a wasteful number, since it uses less digits than its factorization.

121101210200200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799876666 (or 799876657 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121101210200200 its reverse (2002012101121), we get a palindrome (123103222301321).

The spelling of 121101210200200 in words is "one hundred twenty-one trillion, one hundred one billion, two hundred ten million, two hundred thousand, two hundred".