260216221 has 2 divisors, whose sum is σ = 260216222. Its totient is φ = 260216220.

The previous prime is 260216183. The next prime is 260216233. The reversal of 260216221 is 122612062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 256160025 + 4056196 = 16005^2 + 2014^2 .

It is a cyclic number.

It is not a de Polignac number, because 260216221 - 2¹¹ = 260214173 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 260216192 and 260216201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260216251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130108110 + 130108111.

It is an arithmetic number, because the mean of its divisors is an integer number (130108111).

Almost surely, 2^260216221 is an apocalyptic number.

It is an amenable number.

260216221 is a deficient number, since it is larger than the sum of its proper divisors (1).

260216221 is an equidigital number, since it uses as much as digits as its factorization.

260216221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 260216221 is about 16131.2188318180. The cubic root of 260216221 is about 638.4273079738.

Adding to 260216221 its reverse (122612062), we get a palindrome (382828283).

The spelling of 260216221 in words is "two hundred sixty million, two hundred sixteen thousand, two hundred twenty-one".