1123234220 has 24 divisors (see below), whose sum is σ = 2359675584. Its totient is φ = 449125376.

The previous prime is 1123234219. The next prime is 1123234241. The reversal of 1123234220 is 224323211.

It is a super-2 number, since 2×1123234220² = 2523310225958016800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1123234192 and 1123234201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53789 + ... + 71691.

It is an arithmetic number, because the mean of its divisors is an integer number (98319816).

Almost surely, 2^1123234220 is an apocalyptic number.

1123234220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123234220 is an abundant number, since it is smaller than the sum of its proper divisors (1236441364).

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

1123234220 is a wasteful number, since it uses less digits than its factorization.

1123234220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21049 (or 21047 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1123234220 is about 33514.6866313859. The cubic root of 1123234220 is about 1039.4974828198.

Adding to 1123234220 its reverse (224323211), we get a palindrome (1347557431).

The spelling of 1123234220 in words is "one billion, one hundred twenty-three million, two hundred thirty-four thousand, two hundred twenty".