111151223 has 2 divisors, whose sum is σ = 111151224. Its totient is φ = 111151222.

The previous prime is 111151217. The next prime is 111151237. The reversal of 111151223 is 322151111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111151223 - 2¹⁴ = 111134839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111151283) 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, 55575611 + 55575612.

It is an arithmetic number, because the mean of its divisors is an integer number (55575612).

Almost surely, 2^111151223 is an apocalyptic number.

111151223 is a deficient number, since it is larger than the sum of its proper divisors (1).

111151223 is an equidigital number, since it uses as much as digits as its factorization.

111151223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60, while the sum is 17.

The square root of 111151223 is about 10542.8280361580. The cubic root of 111151223 is about 480.8077011635.

The spelling of 111151223 in words is "one hundred eleven million, one hundred fifty-one thousand, two hundred twenty-three".