20300310221 has 4 divisors (see below), whose sum is σ = 20848967292. Its totient is φ = 19751653152.

The previous prime is 20300310139. The next prime is 20300310241. The reversal of 20300310221 is 12201300302.

It is a happy number.

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 19359661321 + 940648900 = 139139^2 + 30670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20300310221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20300310196 and 20300310205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300310241) 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, 274328480 + ... + 274328553.

It is an arithmetic number, because the mean of its divisors is an integer number (5212241823).

Almost surely, 2^20300310221 is an apocalyptic number.

It is an amenable number.

20300310221 is a deficient number, since it is larger than the sum of its proper divisors (548657071).

20300310221 is an equidigital number, since it uses as much as digits as its factorization.

20300310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548657070.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20300310221 its reverse (12201300302), we get a palindrome (32501610523).

The spelling of 20300310221 in words is "twenty billion, three hundred million, three hundred ten thousand, two hundred twenty-one".