20100111200201 has 2 divisors, whose sum is σ = 20100111200202. Its totient is φ = 20100111200200.

The previous prime is 20100111200167. The next prime is 20100111200227. The reversal of 20100111200201 is 10200211100102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14487736988176 + 5612374212025 = 3806276^2 + 2369045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20100111200201 is a prime.

It is not a weakly prime, because it can be changed into another prime (20100111200251) 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 as a sum of consecutive naturals, namely, 10050055600100 + 10050055600101.

It is an arithmetic number, because the mean of its divisors is an integer number (10050055600101).

Almost surely, 2^{20100111200201} is an apocalyptic number.

It is an amenable number.

20100111200201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100111200201 is an equidigital number, since it uses as much as digits as its factorization.

20100111200201 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 20100111200201 its reverse (10200211100102), we get a palindrome (30300322300303).

The spelling of 20100111200201 in words is "twenty trillion, one hundred billion, one hundred eleven million, two hundred thousand, two hundred one".