20243420011 has 2 divisors, whose sum is σ = 20243420012. Its totient is φ = 20243420010.

The previous prime is 20243419997. The next prime is 20243420027. The reversal of 20243420011 is 11002434202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20243420011 - 2¹³ = 20243411819 is a prime.

It is not a weakly prime, because it can be changed into another prime (20243420051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121710005 + 10121710006.

It is an arithmetic number, because the mean of its divisors is an integer number (10121710006).

Almost surely, 2^20243420011 is an apocalyptic number.

20243420011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20243420011 is an equidigital number, since it uses as much as digits as its factorization.

20243420011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20243420011 its reverse (11002434202), we get a palindrome (31245854213).

The spelling of 20243420011 in words is "twenty billion, two hundred forty-three million, four hundred twenty thousand, eleven".