20303221109 has 2 divisors, whose sum is σ = 20303221110. Its totient is φ = 20303221108.

The previous prime is 20303221093. The next prime is 20303221129. The reversal of 20303221109 is 90112230302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13524992209 + 6778228900 = 116297^2 + 82330^2 .

It is a cyclic number.

It is not a de Polignac number, because 20303221109 - 2⁴ = 20303221093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20303221129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151610554 + 10151610555.

It is an arithmetic number, because the mean of its divisors is an integer number (10151610555).

Almost surely, 2^20303221109 is an apocalyptic number.

It is an amenable number.

20303221109 is a deficient number, since it is larger than the sum of its proper divisors (1).

20303221109 is an equidigital number, since it uses as much as digits as its factorization.

20303221109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The spelling of 20303221109 in words is "twenty billion, three hundred three million, two hundred twenty-one thousand, one hundred nine".