11100133081 has 2 divisors, whose sum is σ = 11100133082. Its totient is φ = 11100133080.

The previous prime is 11100133067. The next prime is 11100133123. The reversal of 11100133081 is 18033100111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10944507456 + 155625625 = 104616^2 + 12475^2 .

It is a cyclic number.

It is not a de Polignac number, because 11100133081 - 2⁵ = 11100133049 is a prime.

It is a super-2 number, since 2×11100133081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11100433081) 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, 5550066540 + 5550066541.

It is an arithmetic number, because the mean of its divisors is an integer number (5550066541).

Almost surely, 2^11100133081 is an apocalyptic number.

It is an amenable number.

11100133081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100133081 is an equidigital number, since it uses as much as digits as its factorization.

11100133081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 11100133081 its reverse (18033100111), we get a palindrome (29133233192).

The spelling of 11100133081 in words is "eleven billion, one hundred million, one hundred thirty-three thousand, eighty-one".