111223555 has 16 divisors (see below), whose sum is σ = 140421600. Its totient is φ = 84448000.

The previous prime is 111223543. The next prime is 111223577. The reversal of 111223555 is 555322111.

It is not a de Polignac number, because 111223555 - 2¹⁵ = 111190787 is a prime.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2055 + ... + 15055.

It is an arithmetic number, because the mean of its divisors is an integer number (8776350).

Almost surely, 2^111223555 is an apocalyptic number.

111223555 is a deficient number, since it is larger than the sum of its proper divisors (29198045).

111223555 is a wasteful number, since it uses less digits than its factorization.

111223555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13094.

The product of its digits is 1500, while the sum is 25.

The square root of 111223555 is about 10546.2578671299. The cubic root of 111223555 is about 480.9119742445.

Adding to 111223555 its reverse (555322111), we get a palindrome (666545666).

The spelling of 111223555 in words is "one hundred eleven million, two hundred twenty-three thousand, five hundred fifty-five".