111116477 has 2 divisors, whose sum is σ = 111116478. Its totient is φ = 111116476.

The previous prime is 111116449. The next prime is 111116479. The reversal of 111116477 is 774611111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110965156 + 151321 = 10534^2 + 389^2 .

It is a cyclic number.

It is not a de Polignac number, because 111116477 - 2¹⁶ = 111050941 is a prime.

Together with 111116479, 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 (111116479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55558238 + 55558239.

It is an arithmetic number, because the mean of its divisors is an integer number (55558239).

Almost surely, 2^111116477 is an apocalyptic number.

It is an amenable number.

111116477 is a deficient number, since it is larger than the sum of its proper divisors (1).

111116477 is an equidigital number, since it uses as much as digits as its factorization.

111116477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1176, while the sum is 29.

The square root of 111116477 is about 10541.1800572801. The cubic root of 111116477 is about 480.7575955955.

Adding to 111116477 its reverse (774611111), we get a palindrome (885727588).

The spelling of 111116477 in words is "one hundred eleven million, one hundred sixteen thousand, four hundred seventy-seven".