11110123121081 has 2 divisors, whose sum is σ = 11110123121082. Its totient is φ = 11110123121080.

The previous prime is 11110123121057. The next prime is 11110123121089. The reversal of 11110123121081 is 18012132101111.

11110123121081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9267884262400 + 1842238858681 = 3044320^2 + 1357291^2 .

It is an emirp because it is prime and its reverse (18012132101111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11110123121081 is a prime.

It is a super-2 number, since 2×11110123121081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11110123121089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555061560540 + 5555061560541.

It is an arithmetic number, because the mean of its divisors is an integer number (5555061560541).

Almost surely, 2^{11110123121081} is an apocalyptic number.

It is an amenable number.

11110123121081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11110123121081 is an equidigital number, since it uses as much as digits as its factorization.

11110123121081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 23.

Adding to 11110123121081 its reverse (18012132101111), we get a palindrome (29122255222192).

The spelling of 11110123121081 in words is "eleven trillion, one hundred ten billion, one hundred twenty-three million, one hundred twenty-one thousand, eighty-one".