20242111 has 2 divisors, whose sum is σ = 20242112. Its totient is φ = 20242110.

The previous prime is 20242109. The next prime is 20242127. The reversal of 20242111 is 11124202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20242111 - 2¹ = 20242109 is a prime.

Together with 20242109, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20242091 and 20242100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20242511) 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, 10121055 + 10121056.

It is an arithmetic number, because the mean of its divisors is an integer number (10121056).

Almost surely, 2^20242111 is an apocalyptic number.

20242111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20242111 is an equidigital number, since it uses as much as digits as its factorization.

20242111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 20242111 is about 4499.1233590556. The cubic root of 20242111 is about 272.5326886129.

Adding to 20242111 its reverse (11124202), we get a palindrome (31366313).

The spelling of 20242111 in words is "twenty million, two hundred forty-two thousand, one hundred eleven".