216081301 has 2 divisors, whose sum is σ = 216081302. Its totient is φ = 216081300.

The previous prime is 216081293. The next prime is 216081311. The reversal of 216081301 is 103180612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171872100 + 44209201 = 13110^2 + 6649^2 .

It is a cyclic number.

It is not a de Polignac number, because 216081301 - 2³ = 216081293 is a prime.

It is a super-2 number, since 2×216081301² = 93382257283705202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216081311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108040650 + 108040651.

It is an arithmetic number, because the mean of its divisors is an integer number (108040651).

Almost surely, 2^216081301 is an apocalyptic number.

It is an amenable number.

216081301 is a deficient number, since it is larger than the sum of its proper divisors (1).

216081301 is an equidigital number, since it uses as much as digits as its factorization.

216081301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 216081301 is about 14699.7041126684. The cubic root of 216081301 is about 600.0752692609.

The spelling of 216081301 in words is "two hundred sixteen million, eighty-one thousand, three hundred one".