11067720217 has 2 divisors, whose sum is σ = 11067720218. Its totient is φ = 11067720216.

The previous prime is 11067720211. The next prime is 11067720227. The reversal of 11067720217 is 71202776011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9988203481 + 1079516736 = 99941^2 + 32856^2 .

It is a cyclic number.

It is not a de Polignac number, because 11067720217 - 2¹¹ = 11067718169 is a prime.

It is not a weakly prime, because it can be changed into another prime (11067720211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5533860108 + 5533860109.

It is an arithmetic number, because the mean of its divisors is an integer number (5533860109).

Almost surely, 2^11067720217 is an apocalyptic number.

It is an amenable number.

11067720217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11067720217 is an equidigital number, since it uses as much as digits as its factorization.

11067720217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8232, while the sum is 34.

The spelling of 11067720217 in words is "eleven billion, sixty-seven million, seven hundred twenty thousand, two hundred seventeen".