201011440109 has 2 divisors, whose sum is σ = 201011440110. Its totient is φ = 201011440108.

The previous prime is 201011440087. The next prime is 201011440153. The reversal of 201011440109 is 901044110102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132603037609 + 68408402500 = 364147^2 + 261550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201011440109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201011440169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505720054 + 100505720055.

It is an arithmetic number, because the mean of its divisors is an integer number (100505720055).

Almost surely, 2^201011440109 is an apocalyptic number.

It is an amenable number.

201011440109 is a deficient number, since it is larger than the sum of its proper divisors (1).

201011440109 is an equidigital number, since it uses as much as digits as its factorization.

201011440109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 201011440109 in words is "two hundred one billion, eleven million, four hundred forty thousand, one hundred nine".