20112329 has 2 divisors, whose sum is σ = 20112330. Its totient is φ = 20112328.

The previous prime is 20112319. The next prime is 20112331. The reversal of 20112329 is 92321102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14100025 + 6012304 = 3755^2 + 2452^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112329 - 2⁸ = 20112073 is a prime.

It is a Sophie Germain prime.

Together with 20112331, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20112329.

It is not a weakly prime, because it can be changed into another prime (20112319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056164 + 10056165.

It is an arithmetic number, because the mean of its divisors is an integer number (10056165).

Almost surely, 2^20112329 is an apocalyptic number.

It is an amenable number.

20112329 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112329 is an equidigital number, since it uses as much as digits as its factorization.

20112329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 20112329 is about 4484.6771344212. The cubic root of 20112329 is about 271.9489929225.

The spelling of 20112329 in words is "twenty million, one hundred twelve thousand, three hundred twenty-nine".