20203302109 has 2 divisors, whose sum is σ = 20203302110. Its totient is φ = 20203302108.

The previous prime is 20203302107. The next prime is 20203302149. The reversal of 20203302109 is 90120330202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16954644100 + 3248658009 = 130210^2 + 56997^2 .

It is a cyclic number.

It is not a de Polignac number, because 20203302109 - 2¹ = 20203302107 is a prime.

It is a super-2 number, since 2×20203302109² (a number of 21 digits) contains 22 as substring.

Together with 20203302107, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20203302109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20203302107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101651054 + 10101651055.

It is an arithmetic number, because the mean of its divisors is an integer number (10101651055).

Almost surely, 2^20203302109 is an apocalyptic number.

It is an amenable number.

20203302109 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203302109 is an equidigital number, since it uses as much as digits as its factorization.

20203302109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The spelling of 20203302109 in words is "twenty billion, two hundred three million, three hundred two thousand, one hundred nine".