1320220000 has 240 divisors, whose sum is σ = 3762258192. Its totient is φ = 450560000.

The previous prime is 1320219947. The next prime is 1320220001. The reversal of 1320220000 is 220231.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320220001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3739824 + ... + 3740176.

Almost surely, 2^1320220000 is an apocalyptic number.

1320220000 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 1320220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1881129096).

1320220000 is an abundant number, since it is smaller than the sum of its proper divisors (2442038192).

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

1320220000 is a wasteful number, since it uses less digits than its factorization.

1320220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 1320220000 is about 36334.8317733824. The cubic root of 1320220000 is about 1097.0222493962.

Adding to 1320220000 its reverse (220231), we get a palindrome (1320440231).

The spelling of 1320220000 in words is "one billion, three hundred twenty million, two hundred twenty thousand".