1220080000 has 160 divisors (see below), whose sum is σ = 3087699120. Its totient is φ = 480000000.

The previous prime is 1220079961. The next prime is 1220080049. The reversal of 1220080000 is 800221.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8079925 + ... + 8080075.

Almost surely, 2^1220080000 is an apocalyptic number.

1220080000 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 1220080000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1543849560).

1220080000 is an abundant number, since it is smaller than the sum of its proper divisors (1867619120).

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

1220080000 is an equidigital number, since it uses as much as digits as its factorization.

1220080000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 259 counting only the distinct ones).

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

The square root of 1220080000 is about 34929.6435710415. The cubic root of 1220080000 is about 1068.5530854795.

Adding to 1220080000 its reverse (800221), we get a palindrome (1220880221).

The spelling of 1220080000 in words is "one billion, two hundred twenty million, eighty thousand".