111151440109 has 2 divisors, whose sum is σ = 111151440110. Its totient is φ = 111151440108.

The previous prime is 111151440047. The next prime is 111151440121. The reversal of 111151440109 is 901044151111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81378972900 + 29772467209 = 285270^2 + 172547^2 .

It is a cyclic number.

It is not a de Polignac number, because 111151440109 - 2⁷ = 111151439981 is a prime.

It is a super-2 number, since 2×111151440109² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111151440139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55575720054 + 55575720055.

It is an arithmetic number, because the mean of its divisors is an integer number (55575720055).

Almost surely, 2^111151440109 is an apocalyptic number.

It is an amenable number.

111151440109 is a deficient number, since it is larger than the sum of its proper divisors (1).

111151440109 is an equidigital number, since it uses as much as digits as its factorization.

111151440109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 28.

The spelling of 111151440109 in words is "one hundred eleven billion, one hundred fifty-one million, four hundred forty thousand, one hundred nine".