111321225 has 18 divisors (see below), whose sum is σ = 199389086. Its totient is φ = 59371200.

The previous prime is 111321179. The next prime is 111321229. The reversal of 111321225 is 522123111.

It can be written as a sum of positive squares in 3 ways, for example, as 29942784 + 81378441 = 5472^2 + 9021^2 .

It is not a de Polignac number, because 111321225 - 2⁷ = 111321097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111321198 and 111321207.

It is not an unprimeable number, because it can be changed into a prime (111321229) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 247156 + ... + 247605.

Almost surely, 2^111321225 is an apocalyptic number.

111321225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111321225 is a deficient number, since it is larger than the sum of its proper divisors (88067861).

111321225 is a wasteful number, since it uses less digits than its factorization.

111321225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494777 (or 494769 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 111321225 is about 10550.8874034367. The cubic root of 111321225 is about 481.0527026189.

Adding to 111321225 its reverse (522123111), we get a palindrome (633444336).

The spelling of 111321225 in words is "one hundred eleven million, three hundred twenty-one thousand, two hundred twenty-five".