1123221112 has 16 divisors (see below), whose sum is σ = 2268042840. Its totient is φ = 518409696.

The previous prime is 1123221097. The next prime is 1123221133. The reversal of 1123221112 is 2111223211.

It is a congruent number.

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, 5399998 + ... + 5400205.

Almost surely, 2^1123221112 is an apocalyptic number.

It is an amenable number.

1123221112 is an abundant number, since it is smaller than the sum of its proper divisors (1144821728).

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

1123221112 is a wasteful number, since it uses less digits than its factorization.

1123221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10800222 (or 10800218 counting only the distinct ones).

The product of its digits is 48, while the sum is 16.

The square root of 1123221112 is about 33514.4910747575. The cubic root of 1123221112 is about 1039.4934392030.

Adding to 1123221112 its reverse (2111223211), we get a palindrome (3234444323).

The spelling of 1123221112 in words is "one billion, one hundred twenty-three million, two hundred twenty-one thousand, one hundred twelve".