20002012243 has 2 divisors, whose sum is σ = 20002012244. Its totient is φ = 20002012242.

The previous prime is 20002012189. The next prime is 20002012267. The reversal of 20002012243 is 34221020002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20002012243 - 2²⁵ = 19968457811 is a prime.

It is not a weakly prime, because it can be changed into another prime (20002072243) 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, 10001006121 + 10001006122.

It is an arithmetic number, because the mean of its divisors is an integer number (10001006122).

Almost surely, 2^20002012243 is an apocalyptic number.

20002012243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002012243 is an equidigital number, since it uses as much as digits as its factorization.

20002012243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20002012243 its reverse (34221020002), we get a palindrome (54223032245).

The spelling of 20002012243 in words is "twenty billion, two million, twelve thousand, two hundred forty-three".