1122112128 has 32 divisors (see below), whose sum is σ = 2980611360. Its totient is φ = 374037248.

The previous prime is 1122112099. The next prime is 1122112151. The reversal of 1122112128 is 8212112211.

It is a tau number, because it is divible by the number of its divisors (32).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1460700 + ... + 1461467.

It is an arithmetic number, because the mean of its divisors is an integer number (93144105).

Almost surely, 2^1122112128 is an apocalyptic number.

It is an amenable number.

1122112128 is an abundant number, since it is smaller than the sum of its proper divisors (1858499232).

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

1122112128 is an equidigital number, since it uses as much as digits as its factorization.

1122112128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922184 (or 2922172 counting only the distinct ones).

The product of its digits is 128, while the sum is 21.

The square root of 1122112128 is about 33497.9421457498. The cubic root of 1122112128 is about 1039.1512206858.

Adding to 1122112128 its reverse (8212112211), we get a palindrome (9334224339).

The spelling of 1122112128 in words is "one billion, one hundred twenty-two million, one hundred twelve thousand, one hundred twenty-eight".