201116506601 has 2 divisors, whose sum is σ = 201116506602. Its totient is φ = 201116506600.

The previous prime is 201116506561. The next prime is 201116506649. The reversal of 201116506601 is 106605611102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179141409001 + 21975097600 = 423251^2 + 148240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201116506601 is a prime.

It is not a weakly prime, because it can be changed into another prime (201116506651) 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, 100558253300 + 100558253301.

It is an arithmetic number, because the mean of its divisors is an integer number (100558253301).

Almost surely, 2^201116506601 is an apocalyptic number.

It is an amenable number.

201116506601 is a deficient number, since it is larger than the sum of its proper divisors (1).

201116506601 is an equidigital number, since it uses as much as digits as its factorization.

201116506601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The spelling of 201116506601 in words is "two hundred one billion, one hundred sixteen million, five hundred six thousand, six hundred one".