1220800000 has 240 divisors, whose sum is σ = 3516337440. Its totient is φ = 414720000.

The previous prime is 1220799977. The next prime is 1220800001. The reversal of 1220800000 is 80221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220800001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11199946 + ... + 11200054.

It is an arithmetic number, because the mean of its divisors is an integer number (14651406).

Almost surely, 2^1220800000 is an apocalyptic number.

1220800000 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 1220800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1758168720).

1220800000 is an abundant number, since it is smaller than the sum of its proper divisors (2295537440).

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

1220800000 is an frugal number, since it uses more digits than its factorization.

1220800000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1220800000 is about 34939.9484830759. The cubic root of 1220800000 is about 1068.7632375274.

Adding to 1220800000 its reverse (80221), we get a palindrome (1220880221).

The spelling of 1220800000 in words is "one billion, two hundred twenty million, eight hundred thousand".