20212330109 has 2 divisors, whose sum is σ = 20212330110. Its totient is φ = 20212330108.

The previous prime is 20212330097. The next prime is 20212330157. The reversal of 20212330109 is 90103321202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20141854084 + 70476025 = 141922^2 + 8395^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212330109 - 2²⁴ = 20195552893 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212330309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106165054 + 10106165055.

It is an arithmetic number, because the mean of its divisors is an integer number (10106165055).

Almost surely, 2^20212330109 is an apocalyptic number.

It is an amenable number.

20212330109 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212330109 is an equidigital number, since it uses as much as digits as its factorization.

20212330109 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.

It can be divided in two parts, 202123 and 30109, that added together give a palindrome (232232).

The spelling of 20212330109 in words is "twenty billion, two hundred twelve million, three hundred thirty thousand, one hundred nine".