200121200200 has 48 divisors (see below), whose sum is σ = 476102317680. Its totient is φ = 78186884160.

The previous prime is 200121200161. The next prime is 200121200207. The reversal of 200121200200 is 2002121002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (200121200207) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 11626354 + ... + 11643553.

It is an arithmetic number, because the mean of its divisors is an integer number (9918798285).

Almost surely, 2^200121200200 is an apocalyptic number.

200121200200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200121200200 is an abundant number, since it is smaller than the sum of its proper divisors (275981117480).

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

200121200200 is a wasteful number, since it uses less digits than its factorization.

200121200200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23269966 (or 23269957 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 200121200200 its reverse (2002121002), we get a palindrome (202123321202).

The spelling of 200121200200 in words is "two hundred billion, one hundred twenty-one million, two hundred thousand, two hundred".