10305335021 has 4 divisors (see below), whose sum is σ = 10305583932. Its totient is φ = 10305086112.

The previous prime is 10305335017. The next prime is 10305335099. The reversal of 10305335021 is 12053350301.

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 10218379396 + 86955625 = 101086^2 + 9325^2 .

It is a cyclic number.

It is not a de Polignac number, because 10305335021 - 2² = 10305335017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10305335011) 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, 45770 + ... + 150683.

It is an arithmetic number, because the mean of its divisors is an integer number (2576395983).

Almost surely, 2^10305335021 is an apocalyptic number.

It is an amenable number.

10305335021 is a deficient number, since it is larger than the sum of its proper divisors (248911).

10305335021 is an equidigital number, since it uses as much as digits as its factorization.

10305335021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248910.

The product of its (nonzero) digits is 1350, while the sum is 23.

Adding to 10305335021 its reverse (12053350301), we get a palindrome (22358685322).

The spelling of 10305335021 in words is "ten billion, three hundred five million, three hundred thirty-five thousand, twenty-one".