11331312232217 has 2 divisors, whose sum is σ = 11331312232218. Its totient is φ = 11331312232216.

The previous prime is 11331312232169. The next prime is 11331312232343. The reversal of 11331312232217 is 71223221313311.

11331312232217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11286179779081 + 45132453136 = 3359491^2 + 212444^2 .

It is a cyclic number.

It is not a de Polignac number, because 11331312232217 - 2¹⁰ = 11331312231193 is a prime.

It is a super-2 number, since 2×11331312232217² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11331312232417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665656116108 + 5665656116109.

It is an arithmetic number, because the mean of its divisors is an integer number (5665656116109).

Almost surely, 2^{11331312232217} is an apocalyptic number.

It is an amenable number.

11331312232217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331312232217 is an equidigital number, since it uses as much as digits as its factorization.

11331312232217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 32.

Adding to 11331312232217 its reverse (71223221313311), we get a palindrome (82554533545528).

The spelling of 11331312232217 in words is "eleven trillion, three hundred thirty-one billion, three hundred twelve million, two hundred thirty-two thousand, two hundred seventeen".