20353042111 has 2 divisors, whose sum is σ = 20353042112. Its totient is φ = 20353042110.

The previous prime is 20353042109. The next prime is 20353042133. The reversal of 20353042111 is 11124035302.

It is a happy number.

It is an a-pointer prime, because the next prime (20353042133) can be obtained adding 20353042111 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20353042111 - 2¹ = 20353042109 is a prime.

Together with 20353042109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20353012111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10176521055 + 10176521056.

It is an arithmetic number, because the mean of its divisors is an integer number (10176521056).

Almost surely, 2^20353042111 is an apocalyptic number.

20353042111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20353042111 is an equidigital number, since it uses as much as digits as its factorization.

20353042111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 20353042111 its reverse (11124035302), we get a palindrome (31477077413).

The spelling of 20353042111 in words is "twenty billion, three hundred fifty-three million, forty-two thousand, one hundred eleven".