11442240217 has 2 divisors, whose sum is σ = 11442240218. Its totient is φ = 11442240216.

The previous prime is 11442240209. The next prime is 11442240239. The reversal of 11442240217 is 71204224411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9221568841 + 2220671376 = 96029^2 + 47124^2 .

It is a cyclic number.

It is not a de Polignac number, because 11442240217 - 2³ = 11442240209 is a prime.

It is a super-2 number, since 2×11442240217² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11442247217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5721120108 + 5721120109.

It is an arithmetic number, because the mean of its divisors is an integer number (5721120109).

Almost surely, 2^11442240217 is an apocalyptic number.

It is an amenable number.

11442240217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11442240217 is an equidigital number, since it uses as much as digits as its factorization.

11442240217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 28.

Adding to 11442240217 its reverse (71204224411), we get a palindrome (82646464628).

The spelling of 11442240217 in words is "eleven billion, four hundred forty-two million, two hundred forty thousand, two hundred seventeen".