111330881 has 2 divisors, whose sum is σ = 111330882. Its totient is φ = 111330880.

The previous prime is 111330859. The next prime is 111330883. The reversal of 111330881 is 188033111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68624656 + 42706225 = 8284^2 + 6535^2 .

It is a cyclic number.

It is not a de Polignac number, because 111330881 - 2¹⁰ = 111329857 is a prime.

It is a super-2 number, since 2×111330881² = 24789130128472322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 111330883, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 111330881.

It is not a weakly prime, because it can be changed into another prime (111330883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55665440 + 55665441.

It is an arithmetic number, because the mean of its divisors is an integer number (55665441).

Almost surely, 2^111330881 is an apocalyptic number.

It is an amenable number.

111330881 is a deficient number, since it is larger than the sum of its proper divisors (1).

111330881 is an equidigital number, since it uses as much as digits as its factorization.

111330881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 111330881 is about 10551.3449853561. The cubic root of 111330881 is about 481.0666110495.

Adding to 111330881 its reverse (188033111), we get a palindrome (299363992).

It can be divided in two parts, 111330 and 881, that added together give a palindrome (112211).

The spelling of 111330881 in words is "one hundred eleven million, three hundred thirty thousand, eight hundred eighty-one".