1300021003020 has 24 divisors (see below), whose sum is σ = 3640058808624. Its totient is φ = 346672267456.

The previous prime is 1300021003013. The next prime is 1300021003123. The reversal of 1300021003020 is 203001200031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1300021002987 and 1300021003005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10833508299 + ... + 10833508418.

It is an arithmetic number, because the mean of its divisors is an integer number (151669117026).

Almost surely, 2^{1300021003020} is an apocalyptic number.

1300021003020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1300021003020 is an abundant number, since it is smaller than the sum of its proper divisors (2340037805604).

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

1300021003020 is a wasteful number, since it uses less digits than its factorization.

1300021003020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21667016729 (or 21667016727 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 1300021003020 its reverse (203001200031), we get a palindrome (1503022203051).

The spelling of 1300021003020 in words is "one trillion, three hundred billion, twenty-one million, three thousand, twenty".