111149 has 2 divisors, whose sum is σ = 111150. Its totient is φ = 111148.

The previous prime is 111143. The next prime is 111187. The reversal of 111149 is 941111.

111149 is an esthetic number in base 11, because in such base its adjacent digits differ by 1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94249 + 16900 = 307^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 111149 - 2¹² = 107053 is a prime.

It is a Chen prime.

It is a plaindrome in base 10 and base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55574 + 55575.

It is an arithmetic number, because the mean of its divisors is an integer number (55575).

2¹¹¹¹⁴⁹ is an apocalyptic number.

It is an amenable number.

111149 is a deficient number, since it is larger than the sum of its proper divisors (1).

111149 is an equidigital number, since it uses as much as digits as its factorization.

111149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36, while the sum is 17.

The square root of 111149 is about 333.3901618225. The cubic root of 111149 is about 48.0804495793.

The spelling of 111149 in words is "one hundred eleven thousand, one hundred forty-nine".