121112112010200 has 96 divisors (see below), whose sum is σ = 385594778308560. Its totient is φ = 31423683110400.

The previous prime is 121112112010171. The next prime is 121112112010207. The reversal of 121112112010200 is 2010211211121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121112112010200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112112010207) 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 23 ways as a sum of consecutive naturals, for example, 2727728071 + ... + 2727772470.

Almost surely, 2^{121112112010200} is an apocalyptic number.

121112112010200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121112112010200 is an abundant number, since it is smaller than the sum of its proper divisors (264482666298360).

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

121112112010200 is a wasteful number, since it uses less digits than its factorization.

121112112010200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5455500597 (or 5455500588 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121112112010200 its reverse (2010211211121), we get a palindrome (123122323221321).

The spelling of 121112112010200 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred twelve million, ten thousand, two hundred".