1331112228 has 12 divisors (see below), whose sum is σ = 3105928560. Its totient is φ = 443704072.

The previous prime is 1331112227. The next prime is 1331112247. The reversal of 1331112228 is 8222111331.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1331112228² = 3543719527062247968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1331112198 and 1331112207.

It is not an unprimeable number, because it can be changed into a prime (1331112221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55462998 + ... + 55463021.

It is an arithmetic number, because the mean of its divisors is an integer number (258827380).

Almost surely, 2^1331112228 is an apocalyptic number.

It is an amenable number.

1331112228 is an abundant number, since it is smaller than the sum of its proper divisors (1774816332).

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

1331112228 is a wasteful number, since it uses less digits than its factorization.

1331112228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110926026 (or 110926024 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 1331112228 is about 36484.4107530874. The cubic root of 1331112228 is about 1100.0309159355.

Adding to 1331112228 its reverse (8222111331), we get a palindrome (9553223559).

The spelling of 1331112228 in words is "one billion, three hundred thirty-one million, one hundred twelve thousand, two hundred twenty-eight".