201110221200221 has 2 divisors, whose sum is σ = 201110221200222. Its totient is φ = 201110221200220.

The previous prime is 201110221200151. The next prime is 201110221200233. The reversal of 201110221200221 is 122002122011102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199385385511321 + 1724835688900 = 14120389^2 + 1313330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201110221200221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201110221200221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201110221200241) 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, 100555110600110 + 100555110600111.

It is an arithmetic number, because the mean of its divisors is an integer number (100555110600111).

Almost surely, 2^{201110221200221} is an apocalyptic number.

It is an amenable number.

201110221200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

201110221200221 is an equidigital number, since it uses as much as digits as its factorization.

201110221200221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201110221200221 its reverse (122002122011102), we get a palindrome (323112343211323).

The spelling of 201110221200221 in words is "two hundred one trillion, one hundred ten billion, two hundred twenty-one million, two hundred thousand, two hundred twenty-one".