11123010181 has 2 divisors, whose sum is σ = 11123010182. Its totient is φ = 11123010180.

The previous prime is 11123010179. The next prime is 11123010299. The reversal of 11123010181 is 18101032111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5992153281 + 5130856900 = 77409^2 + 71630^2 .

It is a cyclic number.

It is not a de Polignac number, because 11123010181 - 2¹ = 11123010179 is a prime.

It is a super-2 number, since 2×11123010181² (a number of 21 digits) contains 22 as substring.

Together with 11123010179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11123019181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561505090 + 5561505091.

It is an arithmetic number, because the mean of its divisors is an integer number (5561505091).

Almost surely, 2^11123010181 is an apocalyptic number.

It is an amenable number.

11123010181 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123010181 is an equidigital number, since it uses as much as digits as its factorization.

11123010181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 11123010181 its reverse (18101032111), we get a palindrome (29224042292).

The spelling of 11123010181 in words is "eleven billion, one hundred twenty-three million, ten thousand, one hundred eighty-one".