216022361 has 2 divisors, whose sum is σ = 216022362. Its totient is φ = 216022360.

The previous prime is 216022351. The next prime is 216022379. The reversal of 216022361 is 163220612.

216022361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205750336 + 10272025 = 14344^2 + 3205^2 .

It is a cyclic number.

It is not a de Polignac number, because 216022361 - 2⁶ = 216022297 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (216022351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108011180 + 108011181.

It is an arithmetic number, because the mean of its divisors is an integer number (108011181).

Almost surely, 2^216022361 is an apocalyptic number.

It is an amenable number.

216022361 is a deficient number, since it is larger than the sum of its proper divisors (1).

216022361 is an equidigital number, since it uses as much as digits as its factorization.

216022361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 216022361 is about 14697.6991736802. The cubic root of 216022361 is about 600.0207039152.

Adding to 216022361 its reverse (163220612), we get a palindrome (379242973).

The spelling of 216022361 in words is "two hundred sixteen million, twenty-two thousand, three hundred sixty-one".