121100200 has 96 divisors (see below), whose sum is σ = 309980160. Its totient is φ = 43718400.

The previous prime is 121100171. The next prime is 121100219. The reversal of 121100200 is 2001121.

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 23 ways as a sum of consecutive naturals, for example, 121705 + ... + 122695.

It is an arithmetic number, because the mean of its divisors is an integer number (3228960).

Almost surely, 2^121100200 is an apocalyptic number.

121100200 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 121100200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154990080).

121100200 is an abundant number, since it is smaller than the sum of its proper divisors (188879960).

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

121100200 is a wasteful number, since it uses less digits than its factorization.

121100200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067 (or 1058 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 121100200 is about 11004.5536029409. The cubic root of 121100200 is about 494.7452350200.

Adding to 121100200 its reverse (2001121), we get a palindrome (123101321).

The spelling of 121100200 in words is "one hundred twenty-one million, one hundred thousand, two hundred".