1123221330 has 512 divisors, whose sum is σ = 4080844800. Its totient is φ = 215550720.

The previous prime is 1123221269. The next prime is 1123221343. The reversal of 1123221330 is 331223211.

1123221330 is a `hidden beast` number, since 1 + 12 + 322 + 1 + 330 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 38731756 + ... + 38731784.

It is an arithmetic number, because the mean of its divisors is an integer number (7970400).

Almost surely, 2^1123221330 is an apocalyptic number.

1123221330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123221330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2040422400).

1123221330 is an abundant number, since it is smaller than the sum of its proper divisors (2957623470).

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

1123221330 is a wasteful number, since it uses less digits than its factorization.

1123221330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1123221330 is about 33514.4943270818. The cubic root of 1123221330 is about 1039.4935064529.

Adding to 1123221330 its reverse (331223211), we get a palindrome (1454444541).

The spelling of 1123221330 in words is "one billion, one hundred twenty-three million, two hundred twenty-one thousand, three hundred thirty".