201044401013 has 2 divisors, whose sum is σ = 201044401014. Its totient is φ = 201044401012.

The previous prime is 201044400943. The next prime is 201044401031. The reversal of 201044401013 is 310104440102.

Together with next prime (201044401031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197137776004 + 3906625009 = 444002^2 + 62503^2 .

It is a cyclic number.

It is not a de Polignac number, because 201044401013 - 2¹⁰ = 201044399989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201044401813) 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, 100522200506 + 100522200507.

It is an arithmetic number, because the mean of its divisors is an integer number (100522200507).

Almost surely, 2^201044401013 is an apocalyptic number.

It is an amenable number.

201044401013 is a deficient number, since it is larger than the sum of its proper divisors (1).

201044401013 is an equidigital number, since it uses as much as digits as its factorization.

201044401013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 201044401013 its reverse (310104440102), we get a palindrome (511148841115).

The spelling of 201044401013 in words is "two hundred one billion, forty-four million, four hundred one thousand, thirteen".