20300232200221 has 4 divisors (see below), whose sum is σ = 20436475369500. Its totient is φ = 20163989030944.

The previous prime is 20300232200197. The next prime is 20300232200257. The reversal of 20300232200221 is 12200223200302.

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 4552120944900 + 15748111255321 = 2133570^2 + 3968389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20300232200221 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 (20300232207221) 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, 68121584416 + ... + 68121584713.

It is an arithmetic number, because the mean of its divisors is an integer number (5109118842375).

Almost surely, 2^{20300232200221} is an apocalyptic number.

It is an amenable number.

20300232200221 is a deficient number, since it is larger than the sum of its proper divisors (136243169279).

20300232200221 is a wasteful number, since it uses less digits than its factorization.

20300232200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136243169278.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20300232200221 its reverse (12200223200302), we get a palindrome (32500455400523).

The spelling of 20300232200221 in words is "twenty trillion, three hundred billion, two hundred thirty-two million, two hundred thousand, two hundred twenty-one".