201110120221 has 2 divisors, whose sum is σ = 201110120222. Its totient is φ = 201110120220.

The previous prime is 201110120213. The next prime is 201110120311. The reversal of 201110120221 is 122021011102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137280624196 + 63829496025 = 370514^2 + 252645^2 .

It is a cyclic number.

It is not a de Polignac number, because 201110120221 - 2³ = 201110120213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201110126221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100555060110 + 100555060111.

It is an arithmetic number, because the mean of its divisors is an integer number (100555060111).

Almost surely, 2^201110120221 is an apocalyptic number.

It is an amenable number.

201110120221 is a deficient number, since it is larger than the sum of its proper divisors (1).

201110120221 is an equidigital number, since it uses as much as digits as its factorization.

201110120221 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 201110120221 its reverse (122021011102), we get a palindrome (323131131323).

The spelling of 201110120221 in words is "two hundred one billion, one hundred ten million, one hundred twenty thousand, two hundred twenty-one".