1300103443021 has 4 divisors (see below), whose sum is σ = 1300113088092. Its totient is φ = 1300093797952.

The previous prime is 1300103442941. The next prime is 1300103443031. The reversal of 1300103443021 is 1203443010031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 359370275625 + 940733167396 = 599475^2 + 969914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1300103443021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1300103442983 and 1300103443001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300103443031) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4617436 + ... + 4890901.

It is an arithmetic number, because the mean of its divisors is an integer number (325028272023).

Almost surely, 2^{1300103443021} is an apocalyptic number.

It is an amenable number.

1300103443021 is a deficient number, since it is larger than the sum of its proper divisors (9645071).

1300103443021 is an equidigital number, since it uses as much as digits as its factorization.

1300103443021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9645070.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1300103443021 its reverse (1203443010031), we get a palindrome (2503546453052).

The spelling of 1300103443021 in words is "one trillion, three hundred billion, one hundred three million, four hundred forty-three thousand, twenty-one".