65222011 has 2 divisors, whose sum is σ = 65222012. Its totient is φ = 65222010.

The previous prime is 65221991. The next prime is 65222023. The reversal of 65222011 is 11022256.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65222011 - 2¹¹ = 65219963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65222011.

It is not a weakly prime, because it can be changed into another prime (65229011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32611005 + 32611006.

It is an arithmetic number, because the mean of its divisors is an integer number (32611006).

Almost surely, 2^65222011 is an apocalyptic number.

65222011 is a deficient number, since it is larger than the sum of its proper divisors (1).

65222011 is an equidigital number, since it uses as much as digits as its factorization.

65222011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 65222011 is about 8076.0145492687. The cubic root of 65222011 is about 402.5298225141.

Adding to 65222011 its reverse (11022256), we get a palindrome (76244267).

The spelling of 65222011 in words is "sixty-five million, two hundred twenty-two thousand, eleven".