10303302320021 has 4 divisors (see below), whose sum is σ = 10303363218444. Its totient is φ = 10303241421600.

The previous prime is 10303302319997. The next prime is 10303302320041. The reversal of 10303302320021 is 12002320330301.

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 7198971948100 + 3104330371921 = 2683090^2 + 1761911^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10303302320021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10303302319975 and 10303302320002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10303302320041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30194720 + ... + 30534041.

It is an arithmetic number, because the mean of its divisors is an integer number (2575840804611).

Almost surely, 2^{10303302320021} is an apocalyptic number.

It is an amenable number.

10303302320021 is a deficient number, since it is larger than the sum of its proper divisors (60898423).

10303302320021 is an equidigital number, since it uses as much as digits as its factorization.

10303302320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60898422.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 10303302320021 its reverse (12002320330301), we get a palindrome (22305622650322).

The spelling of 10303302320021 in words is "ten trillion, three hundred three billion, three hundred two million, three hundred twenty thousand, twenty-one".