20123354411 has 2 divisors, whose sum is σ = 20123354412. Its totient is φ = 20123354410.

The previous prime is 20123354401. The next prime is 20123354413. The reversal of 20123354411 is 11445332102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20123354411 - 2¹⁸ = 20123092267 is a prime.

Together with 20123354413, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20123354413) 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, 10061677205 + 10061677206.

It is an arithmetic number, because the mean of its divisors is an integer number (10061677206).

Almost surely, 2^20123354411 is an apocalyptic number.

20123354411 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123354411 is an equidigital number, since it uses as much as digits as its factorization.

20123354411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 20123354411 its reverse (11445332102), we get a palindrome (31568686513).

The spelling of 20123354411 in words is "twenty billion, one hundred twenty-three million, three hundred fifty-four thousand, four hundred eleven".