1123220322 has 96 divisors (see below), whose sum is σ = 2873325312. Its totient is φ = 310407552.

The previous prime is 1123220291. The next prime is 1123220353. The reversal of 1123220322 is 2230223211.

1123220322 is a `hidden beast` number, since 1 + 123 + 220 + 322 = 666.

It is an interprime number because it is at equal distance from previous prime (1123220291) and next prime (1123220353).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1123220295 and 1123220304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 917803 + ... + 919025.

It is an arithmetic number, because the mean of its divisors is an integer number (29930472).

Almost surely, 2^1123220322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123220322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1436662656).

1123220322 is an abundant number, since it is smaller than the sum of its proper divisors (1750104990).

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

1123220322 is a wasteful number, since it uses less digits than its factorization.

1123220322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472 (or 1469 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1123220322 is about 33514.4792888089. The cubic root of 1123220322 is about 1039.4931954992.

Adding to 1123220322 its reverse (2230223211), we get a palindrome (3353443533).

It can be divided in two parts, 1123 and 220322, that added together give a triangular number (221445 = T₆₆₅).

The spelling of 1123220322 in words is "one billion, one hundred twenty-three million, two hundred twenty thousand, three hundred twenty-two".