201122431009 has 2 divisors, whose sum is σ = 201122431010. Its totient is φ = 201122431008.

The previous prime is 201122430911. The next prime is 201122431051. The reversal of 201122431009 is 900134221102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199783968784 + 1338462225 = 446972^2 + 36585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201122431009 is a prime.

It is not a weakly prime, because it can be changed into another prime (201122432009) 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, 100561215504 + 100561215505.

It is an arithmetic number, because the mean of its divisors is an integer number (100561215505).

Almost surely, 2^201122431009 is an apocalyptic number.

It is an amenable number.

201122431009 is a deficient number, since it is larger than the sum of its proper divisors (1).

201122431009 is an equidigital number, since it uses as much as digits as its factorization.

201122431009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 201122431009 in words is "two hundred one billion, one hundred twenty-two million, four hundred thirty-one thousand, nine".