20124212110823 has 2 divisors, whose sum is σ = 20124212110824. Its totient is φ = 20124212110822.

The previous prime is 20124212110819. The next prime is 20124212110853. The reversal of 20124212110823 is 32801121242102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20124212110823 - 2² = 20124212110819 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20124212110853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062106055411 + 10062106055412.

It is an arithmetic number, because the mean of its divisors is an integer number (10062106055412).

Almost surely, 2^{20124212110823} is an apocalyptic number.

20124212110823 is a deficient number, since it is larger than the sum of its proper divisors (1).

20124212110823 is an equidigital number, since it uses as much as digits as its factorization.

20124212110823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 29.

Adding to 20124212110823 its reverse (32801121242102), we get a palindrome (52925333352925).

The spelling of 20124212110823 in words is "twenty trillion, one hundred twenty-four billion, two hundred twelve million, one hundred ten thousand, eight hundred twenty-three".