11181181106 has 4 divisors (see below), whose sum is σ = 16771771662. Its totient is φ = 5590590552.

The previous prime is 11181181103. The next prime is 11181181117. The reversal of 11181181106 is 60118118111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60118118111 = 37 ⋅1624814003.

It can be written as a sum of positive squares in only one way, i.e., 10944298225 + 236882881 = 104615^2 + 15391^2 .

It is a super-3 number, since 3×11181181106³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (11181181103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2795295275 + ... + 2795295278.

Almost surely, 2^11181181106 is an apocalyptic number.

11181181106 is a deficient number, since it is larger than the sum of its proper divisors (5590590556).

11181181106 is an equidigital number, since it uses as much as digits as its factorization.

11181181106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5590590555.

The product of its (nonzero) digits is 384, while the sum is 29.

Adding to 11181181106 its reverse (60118118111), we get a palindrome (71299299217).

The spelling of 11181181106 in words is "eleven billion, one hundred eighty-one million, one hundred eighty-one thousand, one hundred six".