216560101 has 2 divisors, whose sum is σ = 216560102. Its totient is φ = 216560100.

The previous prime is 216560087. The next prime is 216560117. The reversal of 216560101 is 101065612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156125025 + 60435076 = 12495^2 + 7774^2 .

It is a cyclic number.

It is not a de Polignac number, because 216560101 - 2¹⁷ = 216429029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216560131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108280050 + 108280051.

It is an arithmetic number, because the mean of its divisors is an integer number (108280051).

Almost surely, 2^216560101 is an apocalyptic number.

It is an amenable number.

216560101 is a deficient number, since it is larger than the sum of its proper divisors (1).

216560101 is an equidigital number, since it uses as much as digits as its factorization.

216560101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 216560101 is about 14715.9811429616. The cubic root of 216560101 is about 600.5181644176.

The spelling of 216560101 in words is "two hundred sixteen million, five hundred sixty thousand, one hundred one".