1111231228 has 6 divisors (see below), whose sum is σ = 1944654656. Its totient is φ = 555615612.

The previous prime is 1111231201. The next prime is 1111231229. The reversal of 1111231228 is 8221321111.

It is a junction number, because it is equal to n+sod(n) for n = 1111231199 and 1111231208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111231229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138903900 + ... + 138903907.

Almost surely, 2^1111231228 is an apocalyptic number.

It is an amenable number.

1111231228 is a deficient number, since it is larger than the sum of its proper divisors (833423428).

1111231228 is a wasteful number, since it uses less digits than its factorization.

1111231228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277807811 (or 277807809 counting only the distinct ones).

The product of its digits is 192, while the sum is 22.

The square root of 1111231228 is about 33335.1350379746. The cubic root of 1111231228 is about 1035.7814904166.

Adding to 1111231228 its reverse (8221321111), we get a palindrome (9332552339).

The spelling of 1111231228 in words is "one billion, one hundred eleven million, two hundred thirty-one thousand, two hundred twenty-eight".