1123212032 has 72 divisors (see below), whose sum is σ = 2413408032. Its totient is φ = 519782400.

The previous prime is 1123212031. The next prime is 1123212047. The reversal of 1123212032 is 2302123211.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 1123212032.

It is not an unprimeable number, because it can be changed into a prime (1123212031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263357 + ... + 267587.

It is an arithmetic number, because the mean of its divisors is an integer number (33519556).

Almost surely, 2^1123212032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123212032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1206704016).

1123212032 is an abundant number, since it is smaller than the sum of its proper divisors (1290196000).

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

1123212032 is an equidigital number, since it uses as much as digits as its factorization.

1123212032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4325 (or 4311 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1123212032 is about 33514.3556106932. The cubic root of 1123212032 is about 1039.4906381440.

Adding to 1123212032 its reverse (2302123211), we get a palindrome (3425335243).

The spelling of 1123212032 in words is "one billion, one hundred twenty-three million, two hundred twelve thousand, thirty-two".