121112120100200 has 24 divisors (see below), whose sum is σ = 281585679233430. Its totient is φ = 48444848040000.

The previous prime is 121112120100151. The next prime is 121112120100211. The reversal of 121112120100200 is 2001021211121.

It can be written as a sum of positive squares in 3 ways, for example, as 112105362832324 + 9006757267876 = 10587982^2 + 3001126^2 .

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, 302780300051 + ... + 302780300450.

Almost surely, 2^{121112120100200} is an apocalyptic number.

121112120100200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121112120100200 is an abundant number, since it is smaller than the sum of its proper divisors (160473559133230).

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

121112120100200 is a wasteful number, since it uses less digits than its factorization.

121112120100200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605560600517 (or 605560600508 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121112120100200 its reverse (2001021211121), we get a palindrome (123113141311321).

The spelling of 121112120100200 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred twenty million, one hundred thousand, two hundred".