200121210202013 has 2 divisors, whose sum is σ = 200121210202014. Its totient is φ = 200121210202012.

The previous prime is 200121210202009. The next prime is 200121210202027. The reversal of 200121210202013 is 310202012121002.

200121210202013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118628649655684 + 81492560546329 = 10891678^2 + 9027323^2 .

It is a cyclic number.

It is not a de Polignac number, because 200121210202013 - 2² = 200121210202009 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 200121210201982 and 200121210202000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200121210202093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060605101006 + 100060605101007.

It is an arithmetic number, because the mean of its divisors is an integer number (100060605101007).

Almost surely, 2^{200121210202013} is an apocalyptic number.

It is an amenable number.

200121210202013 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121210202013 is an equidigital number, since it uses as much as digits as its factorization.

200121210202013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 200121210202013 its reverse (310202012121002), we get a palindrome (510323222323015).

The spelling of 200121210202013 in words is "two hundred trillion, one hundred twenty-one billion, two hundred ten million, two hundred two thousand, thirteen".