200001122110021 has 2 divisors, whose sum is σ = 200001122110022. Its totient is φ = 200001122110020.

The previous prime is 200001122109931. The next prime is 200001122110033. The reversal of 200001122110021 is 120011221100002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199134573365025 + 866548744996 = 14111505^2 + 930886^2 .

It is a cyclic number.

It is not a de Polignac number, because 200001122110021 - 2³⁵ = 199966762371653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200001122109983 and 200001122110010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200001122110921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100000561055010 + 100000561055011.

It is an arithmetic number, because the mean of its divisors is an integer number (100000561055011).

Almost surely, 2^{200001122110021} is an apocalyptic number.

It is an amenable number.

200001122110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

200001122110021 is an equidigital number, since it uses as much as digits as its factorization.

200001122110021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 200001122110021 its reverse (120011221100002), we get a palindrome (320012343210023).

The spelling of 200001122110021 in words is "two hundred trillion, one billion, one hundred twenty-two million, one hundred ten thousand, twenty-one".