1003220000 has 120 divisors (see below), whose sum is σ = 2497150656. Its totient is φ = 396576000.

The previous prime is 1003219993. The next prime is 1003220017. The reversal of 1003220000 is 223001.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1003220000.

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, 2059757 + ... + 2060243.

Almost surely, 2^1003220000 is an apocalyptic number.

1003220000 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 1003220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1248575328).

1003220000 is an abundant number, since it is smaller than the sum of its proper divisors (1493930656).

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

1003220000 is an equidigital number, since it uses as much as digits as its factorization.

1003220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 1003220000 is about 31673.6483531658. The cubic root of 1003220000 is about 1001.0721833454.

Adding to 1003220000 its reverse (223001), we get a palindrome (1003443001).

The spelling of 1003220000 in words is "one billion, three million, two hundred twenty thousand".