200020121110001 has 2 divisors, whose sum is σ = 200020121110002. Its totient is φ = 200020121110000.

The previous prime is 200020121109943. The next prime is 200020121110031. The reversal of 200020121110001 is 100011121020002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130412403030625 + 69607718079376 = 11419825^2 + 8343124^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200020121110001 is a prime.

It is not a weakly prime, because it can be changed into another prime (200020121110031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100010060555000 + 100010060555001.

It is an arithmetic number, because the mean of its divisors is an integer number (100010060555001).

Almost surely, 2^{200020121110001} is an apocalyptic number.

It is an amenable number.

200020121110001 is a deficient number, since it is larger than the sum of its proper divisors (1).

200020121110001 is an equidigital number, since it uses as much as digits as its factorization.

200020121110001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 200020121110001 its reverse (100011121020002), we get a palindrome (300031242130003).

The spelling of 200020121110001 in words is "two hundred trillion, twenty billion, one hundred twenty-one million, one hundred ten thousand, one".