1003321301020 has 96 divisors (see below), whose sum is σ = 2277776712960. Its totient is φ = 369837696000.

The previous prime is 1003321300937. The next prime is 1003321301039. The reversal of 1003321301020 is 201031233001.

It is a junction number, because it is equal to n+sod(n) for n = 1003321300985 and 1003321301003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4935427 + ... + 5134693.

It is an arithmetic number, because the mean of its divisors is an integer number (23726840760).

Almost surely, 2^{1003321301020} is an apocalyptic number.

1003321301020 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 1003321301020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1138888356480).

1003321301020 is an abundant number, since it is smaller than the sum of its proper divisors (1274455411940).

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

1003321301020 is a wasteful number, since it uses less digits than its factorization.

1003321301020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199603 (or 199601 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 1003321301020 its reverse (201031233001), we get a palindrome (1204352534021).

The spelling of 1003321301020 in words is "one trillion, three billion, three hundred twenty-one million, three hundred one thousand, twenty".