200212010122121 has 4 divisors (see below), whose sum is σ = 200701526039700. Its totient is φ = 199722494204544.

The previous prime is 200212010122099. The next prime is 200212010122129. The reversal of 200212010122121 is 121221010212002.

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 134264617482121 + 65947392640000 = 11587261^2 + 8120800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200212010122121 is a prime.

It is a super-2 number, since 2×200212010122121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200212010122121.

It is not an unprimeable number, because it can be changed into a prime (200212010122129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244757958176 + ... + 244757958993.

It is an arithmetic number, because the mean of its divisors is an integer number (50175381509925).

Almost surely, 2^{200212010122121} is an apocalyptic number.

It is an amenable number.

200212010122121 is a deficient number, since it is larger than the sum of its proper divisors (489515917579).

200212010122121 is an equidigital number, since it uses as much as digits as its factorization.

200212010122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489515917578.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 200212010122121 its reverse (121221010212002), we get a palindrome (321433020334123).

The spelling of 200212010122121 in words is "two hundred trillion, two hundred twelve billion, ten million, one hundred twenty-two thousand, one hundred twenty-one".