111020417 has 2 divisors, whose sum is σ = 111020418. Its totient is φ = 111020416.

The previous prime is 111020339. The next prime is 111020419. The reversal of 111020417 is 714020111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105596176 + 5424241 = 10276^2 + 2329^2 .

It is a cyclic number.

It is not a de Polignac number, because 111020417 - 2¹⁰ = 111019393 is a prime.

Together with 111020419, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 111020395 and 111020404.

It is not a weakly prime, because it can be changed into another prime (111020419) 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, 55510208 + 55510209.

It is an arithmetic number, because the mean of its divisors is an integer number (55510209).

Almost surely, 2^111020417 is an apocalyptic number.

It is an amenable number.

111020417 is a deficient number, since it is larger than the sum of its proper divisors (1).

111020417 is an equidigital number, since it uses as much as digits as its factorization.

111020417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 111020417 is about 10536.6226562405. The cubic root of 111020417 is about 480.6190176209.

Adding to 111020417 its reverse (714020111), we get a palindrome (825040528).

The spelling of 111020417 in words is "one hundred eleven million, twenty thousand, four hundred seventeen".