111929117 has 2 divisors, whose sum is σ = 111929118. Its totient is φ = 111929116.

The previous prime is 111929101. The next prime is 111929119. The reversal of 111929117 is 711929111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108284836 + 3644281 = 10406^2 + 1909^2 .

It is a cyclic number.

It is not a de Polignac number, because 111929117 - 2⁴ = 111929101 is a prime.

Together with 111929119, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111929119) 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, 55964558 + 55964559.

It is an arithmetic number, because the mean of its divisors is an integer number (55964559).

Almost surely, 2^111929117 is an apocalyptic number.

It is an amenable number.

111929117 is a deficient number, since it is larger than the sum of its proper divisors (1).

111929117 is an equidigital number, since it uses as much as digits as its factorization.

111929117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134, while the sum is 32.

The square root of 111929117 is about 10579.6558072557. The cubic root of 111929117 is about 481.9267420213.

The spelling of 111929117 in words is "one hundred eleven million, nine hundred twenty-nine thousand, one hundred seventeen".