11321132121181 has 2 divisors, whose sum is σ = 11321132121182. Its totient is φ = 11321132121180.

The previous prime is 11321132121127. The next prime is 11321132121199. The reversal of 11321132121181 is 18112123112311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10950870824100 + 370261297081 = 3309210^2 + 608491^2 .

It is a cyclic number.

It is not a de Polignac number, because 11321132121181 - 2²⁵ = 11321098566749 is a prime.

It is a super-2 number, since 2×11321132121181² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11321132121281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660566060590 + 5660566060591.

It is an arithmetic number, because the mean of its divisors is an integer number (5660566060591).

Almost surely, 2^{11321132121181} is an apocalyptic number.

It is an amenable number.

11321132121181 is a deficient number, since it is larger than the sum of its proper divisors (1).

11321132121181 is an equidigital number, since it uses as much as digits as its factorization.

11321132121181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 28.

Adding to 11321132121181 its reverse (18112123112311), we get a palindrome (29433255233492).

The spelling of 11321132121181 in words is "eleven trillion, three hundred twenty-one billion, one hundred thirty-two million, one hundred twenty-one thousand, one hundred eighty-one".