111231225 has 180 divisors, whose sum is σ = 256568400. Its totient is φ = 47355840.

The previous prime is 111231209. The next prime is 111231233. The reversal of 111231225 is 522132111.

It is not a de Polignac number, because 111231225 - 2⁴ = 111231209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111231198 and 111231207.

It is an unprimeable number.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 1885246 + ... + 1885304.

It is an arithmetic number, because the mean of its divisors is an integer number (1425380).

Almost surely, 2^111231225 is an apocalyptic number.

111231225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111231225 is an abundant number, since it is smaller than the sum of its proper divisors (145337175).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111231225 is a wasteful number, since it uses less digits than its factorization.

111231225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 93 counting only the distinct ones).

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

The square root of 111231225 is about 10546.6214969534. The cubic root of 111231225 is about 480.9230285877.

Adding to 111231225 its reverse (522132111), we get a palindrome (633363336).

The spelling of 111231225 in words is "one hundred eleven million, two hundred thirty-one thousand, two hundred twenty-five".