20122043243 has 2 divisors, whose sum is σ = 20122043244. Its totient is φ = 20122043242.

The previous prime is 20122043231. The next prime is 20122043261. The reversal of 20122043243 is 34234022102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20122043243 - 2⁸ = 20122042987 is a prime.

It is not a weakly prime, because it can be changed into another prime (20122043203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061021621 + 10061021622.

It is an arithmetic number, because the mean of its divisors is an integer number (10061021622).

Almost surely, 2^20122043243 is an apocalyptic number.

20122043243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122043243 is an equidigital number, since it uses as much as digits as its factorization.

20122043243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20122043243 its reverse (34234022102), we get a palindrome (54356065345).

The spelling of 20122043243 in words is "twenty billion, one hundred twenty-two million, forty-three thousand, two hundred forty-three".