20300300323021 has 16 divisors (see below), whose sum is σ = 20487842881200. Its totient is φ = 20113470236160.

The previous prime is 20300300323001. The next prime is 20300300323063. The reversal of 20300300323021 is 12032300300302.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 229129755625 + 20071170567396 = 478675^2 + 4480086^2 .

It is a cyclic number.

It is not a de Polignac number, because 20300300323021 - 2⁷ = 20300300322893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20300300323021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300300323001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219281275 + ... + 219373831.

It is an arithmetic number, because the mean of its divisors is an integer number (1280490180075).

Almost surely, 2^{20300300323021} is an apocalyptic number.

It is an amenable number.

20300300323021 is a deficient number, since it is larger than the sum of its proper divisors (187542558179).

20300300323021 is a wasteful number, since it uses less digits than its factorization.

20300300323021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96384.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20300300323021 its reverse (12032300300302), we get a palindrome (32332600623323).

The spelling of 20300300323021 in words is "twenty trillion, three hundred billion, three hundred million, three hundred twenty-three thousand, twenty-one".