218226011 has 2 divisors, whose sum is σ = 218226012. Its totient is φ = 218226010.

The previous prime is 218225999. The next prime is 218226023. The reversal of 218226011 is 110622812.

It is a balanced prime because it is at equal distance from previous prime (218225999) and next prime (218226023).

It is a cyclic number.

It is not a de Polignac number, because 218226011 - 2¹⁰ = 218224987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (218226031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109113005 + 109113006.

It is an arithmetic number, because the mean of its divisors is an integer number (109113006).

Almost surely, 2^218226011 is an apocalyptic number.

218226011 is a deficient number, since it is larger than the sum of its proper divisors (1).

218226011 is an equidigital number, since it uses as much as digits as its factorization.

218226011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 218226011 is about 14772.4747757442. The cubic root of 218226011 is about 602.0540811890.

Adding to 218226011 its reverse (110622812), we get a palindrome (328848823).

The spelling of 218226011 in words is "two hundred eighteen million, two hundred twenty-six thousand, eleven".