200010012121 has 4 divisors (see below), whose sum is σ = 200080515492. Its totient is φ = 199939508752.

The previous prime is 200010012073. The next prime is 200010012149. The reversal of 200010012121 is 121210010002.

200010012121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54342603225 + 145667408896 = 233115^2 + 381664^2 .

It is a cyclic number.

It is not a de Polignac number, because 200010012121 - 2⁹ = 200010011609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200010012098 and 200010012107.

It is not an unprimeable number, because it can be changed into a prime (200010016121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35247430 + ... + 35253103.

It is an arithmetic number, because the mean of its divisors is an integer number (50020128873).

Almost surely, 2^200010012121 is an apocalyptic number.

It is an amenable number.

200010012121 is a deficient number, since it is larger than the sum of its proper divisors (70503371).

200010012121 is an equidigital number, since it uses as much as digits as its factorization.

200010012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70503370.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 200010012121 its reverse (121210010002), we get a palindrome (321220022123).

The spelling of 200010012121 in words is "two hundred billion, ten million, twelve thousand, one hundred twenty-one".