201100901 has 2 divisors, whose sum is σ = 201100902. Its totient is φ = 201100900.

The previous prime is 201100853. The next prime is 201100919. The reversal of 201100901 is 109001102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104550625 + 96550276 = 10225^2 + 9826^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201100901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201100931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100550450 + 100550451.

It is an arithmetic number, because the mean of its divisors is an integer number (100550451).

Almost surely, 2^201100901 is an apocalyptic number.

It is an amenable number.

201100901 is a deficient number, since it is larger than the sum of its proper divisors (1).

201100901 is an equidigital number, since it uses as much as digits as its factorization.

201100901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 201100901 is about 14181.0049361814. The cubic root of 201100901 is about 585.8746028476.

The spelling of 201100901 in words is "two hundred one million, one hundred thousand, nine hundred one".