111556223 has 4 divisors (see below), whose sum is σ = 112370640. Its totient is φ = 110741808.

The previous prime is 111556219. The next prime is 111556231. The reversal of 111556223 is 322655111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322655111 = 313 ⋅1030847.

It is a cyclic number.

It is not a de Polignac number, because 111556223 - 2² = 111556219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111556192 and 111556201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111526223) 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 in 3 ways as a sum of consecutive naturals, for example, 407003 + ... + 407276.

It is an arithmetic number, because the mean of its divisors is an integer number (28092660).

Almost surely, 2^111556223 is an apocalyptic number.

111556223 is a deficient number, since it is larger than the sum of its proper divisors (814417).

111556223 is an equidigital number, since it uses as much as digits as its factorization.

111556223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814416.

The product of its digits is 1800, while the sum is 26.

The square root of 111556223 is about 10562.0179416625. The cubic root of 111556223 is about 481.3909638670.

The spelling of 111556223 in words is "one hundred eleven million, five hundred fifty-six thousand, two hundred twenty-three".