111204243 has 12 divisors (see below), whose sum is σ = 160720560. Its totient is φ = 74093616.

The previous prime is 111204239. The next prime is 111204251. The reversal of 111204243 is 342402111.

It is not a de Polignac number, because 111204243 - 2² = 111204239 is a prime.

It is a super-2 number, since 2×111204243² = 24732767322406098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111204263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25705 + ... + 29717.

It is an arithmetic number, because the mean of its divisors is an integer number (13393380).

Almost surely, 2^111204243 is an apocalyptic number.

111204243 is a deficient number, since it is larger than the sum of its proper divisors (49516317).

111204243 is a wasteful number, since it uses less digits than its factorization.

111204243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7098 (or 7095 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 111204243 is about 10545.3422419569. The cubic root of 111204243 is about 480.8841386851.

Adding to 111204243 its reverse (342402111), we get a palindrome (453606354).

The spelling of 111204243 in words is "one hundred eleven million, two hundred four thousand, two hundred forty-three".