111603101 has 2 divisors, whose sum is σ = 111603102. Its totient is φ = 111603100.

The previous prime is 111603073. The next prime is 111603119. The reversal of 111603101 is 101306111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59691076 + 51912025 = 7726^2 + 7205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111603101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111606101) 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, 55801550 + 55801551.

It is an arithmetic number, because the mean of its divisors is an integer number (55801551).

Almost surely, 2^111603101 is an apocalyptic number.

It is an amenable number.

111603101 is a deficient number, since it is larger than the sum of its proper divisors (1).

111603101 is an equidigital number, since it uses as much as digits as its factorization.

111603101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 111603101 is about 10564.2368867798. The cubic root of 111603101 is about 481.4583842367.

Adding to 111603101 its reverse (101306111), we get a palindrome (212909212).

The spelling of 111603101 in words is "one hundred eleven million, six hundred three thousand, one hundred one".