217152011 has 2 divisors, whose sum is σ = 217152012. Its totient is φ = 217152010.

The previous prime is 217151989. The next prime is 217152041. The reversal of 217152011 is 110251712.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 217152011 - 2¹⁴ = 217135627 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (217152041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108576005 + 108576006.

It is an arithmetic number, because the mean of its divisors is an integer number (108576006).

Almost surely, 2^217152011 is an apocalyptic number.

217152011 is a deficient number, since it is larger than the sum of its proper divisors (1).

217152011 is an equidigital number, since it uses as much as digits as its factorization.

217152011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 217152011 is about 14736.0785489220. The cubic root of 217152011 is about 601.0647861183.

The spelling of 217152011 in words is "two hundred seventeen million, one hundred fifty-two thousand, eleven".