20300410021 has 4 divisors (see below), whose sum is σ = 20304707500. Its totient is φ = 20296112544.

The previous prime is 20300410007. The next prime is 20300410051. The reversal of 20300410021 is 12001400302.

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 3933045796 + 16367364225 = 62714^2 + 127935^2 .

It is a cyclic number.

It is not a de Polignac number, because 20300410021 - 2¹³ = 20300401829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20300409983 and 20300410010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300410001) 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, 2141646 + ... + 2151103.

It is an arithmetic number, because the mean of its divisors is an integer number (5076176875).

Almost surely, 2^20300410021 is an apocalyptic number.

It is an amenable number.

20300410021 is a deficient number, since it is larger than the sum of its proper divisors (4297479).

20300410021 is an equidigital number, since it uses as much as digits as its factorization.

20300410021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4297478.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20300410021 its reverse (12001400302), we get a palindrome (32301810323).

The spelling of 20300410021 in words is "twenty billion, three hundred million, four hundred ten thousand, twenty-one".