200020111002001 has 2 divisors, whose sum is σ = 200020111002002. Its totient is φ = 200020111002000.

The previous prime is 200020111001983. The next prime is 200020111002083. The reversal of 200020111002001 is 100200111020002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140955045257601 + 59065065744400 = 11872449^2 + 7685380^2 .

It is a cyclic number.

It is not a de Polignac number, because 200020111002001 - 2¹⁹ = 200020110477713 is a prime.

It is not a weakly prime, because it can be changed into another prime (200020111602001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100010055501000 + 100010055501001.

It is an arithmetic number, because the mean of its divisors is an integer number (100010055501001).

Almost surely, 2^{200020111002001} is an apocalyptic number.

It is an amenable number.

200020111002001 is a deficient number, since it is larger than the sum of its proper divisors (1).

200020111002001 is an equidigital number, since it uses as much as digits as its factorization.

200020111002001 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 10.

Adding to 200020111002001 its reverse (100200111020002), we get a palindrome (300220222022003).

The spelling of 200020111002001 in words is "two hundred trillion, twenty billion, one hundred eleven million, two thousand, one".