1123220000 has 240 divisors, whose sum is σ = 3230865792. Its totient is φ = 376320000.

The previous prime is 1123219997. The next prime is 1123220027. The reversal of 1123220000 is 223211.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9939944 + ... + 9940056.

Almost surely, 2^1123220000 is an apocalyptic number.

1123220000 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 1123220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1615432896).

1123220000 is an abundant number, since it is smaller than the sum of its proper divisors (2107645792).

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

1123220000 is an equidigital number, since it uses as much as digits as its factorization.

1123220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1123220000 is about 33514.4744849147. The cubic root of 1123220000 is about 1039.4930961667.

Adding to 1123220000 its reverse (223211), we get a palindrome (1123443211).

The spelling of 1123220000 in words is "one billion, one hundred twenty-three million, two hundred twenty thousand".