1123022120 has 128 divisors (see below), whose sum is σ = 2865300480. Its totient is φ = 392448000.

The previous prime is 1123022111. The next prime is 1123022149. The reversal of 1123022120 is 212203211.

It is a happy number.

It is a super-2 number, since 2×1123022120² = 2522357364018588800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123022095 and 1123022104.

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 31 ways as a sum of consecutive naturals, for example, 3832694 + ... + 3832986.

It is an arithmetic number, because the mean of its divisors is an integer number (22385160).

Almost surely, 2^1123022120 is an apocalyptic number.

1123022120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123022120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1432650240).

1123022120 is an abundant number, since it is smaller than the sum of its proper divisors (1742278360).

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

1123022120 is a wasteful number, since it uses less digits than its factorization.

1123022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1123022120 is about 33511.5221975965. The cubic root of 1123022120 is about 1039.4320493624.

Adding to 1123022120 its reverse (212203211), we get a palindrome (1335225331).

The spelling of 1123022120 in words is "one billion, one hundred twenty-three million, twenty-two thousand, one hundred twenty".