201020510401 has 2 divisors, whose sum is σ = 201020510402. Its totient is φ = 201020510400.

The previous prime is 201020510387. The next prime is 201020510429. The reversal of 201020510401 is 104015020102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172391870401 + 28628640000 = 415201^2 + 169200^2 .

It is a cyclic number.

It is not a de Polignac number, because 201020510401 - 2³³ = 192430575809 is a prime.

It is not a weakly prime, because it can be changed into another prime (201020510461) 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, 100510255200 + 100510255201.

It is an arithmetic number, because the mean of its divisors is an integer number (100510255201).

Almost surely, 2^201020510401 is an apocalyptic number.

It is an amenable number.

201020510401 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020510401 is an equidigital number, since it uses as much as digits as its factorization.

201020510401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 201020510401 its reverse (104015020102), we get a palindrome (305035530503).

The spelling of 201020510401 in words is "two hundred one billion, twenty million, five hundred ten thousand, four hundred one".