200121000010 has 64 divisors (see below), whose sum is σ = 383029702560. Its totient is φ = 75019714560.

The previous prime is 200120999963. The next prime is 200121000011. The reversal of 200121000010 is 10000121002.

It can be written as a sum of positive squares in 16 ways, for example, as 3046267249 + 197074732761 = 55193^2 + 443931^2 .

It is a junction number, because it is equal to n+sod(n) for n = 200120999957 and 200121000002.

It is not an unprimeable number, because it can be changed into a prime (200121000011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74420746 + ... + 74423434.

Almost surely, 2^200121000010 is an apocalyptic number.

200121000010 is a deficient number, since it is larger than the sum of its proper divisors (182908702550).

200121000010 is a wasteful number, since it uses less digits than its factorization.

200121000010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4411.

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

Adding to 200121000010 its reverse (10000121002), we get a palindrome (210121121012).

The spelling of 200121000010 in words is "two hundred billion, one hundred twenty-one million, ten", and thus it is an aban number.