20422042111 has 2 divisors, whose sum is σ = 20422042112. Its totient is φ = 20422042110.

The previous prime is 20422042031. The next prime is 20422042117. The reversal of 20422042111 is 11124022402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20422042111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20422042117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10211021055 + 10211021056.

It is an arithmetic number, because the mean of its divisors is an integer number (10211021056).

Almost surely, 2^20422042111 is an apocalyptic number.

20422042111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20422042111 is an equidigital number, since it uses as much as digits as its factorization.

20422042111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20422042111 its reverse (11124022402), we get a palindrome (31546064513).

The spelling of 20422042111 in words is "twenty billion, four hundred twenty-two million, forty-two thousand, one hundred eleven".