20012230243 has 2 divisors, whose sum is σ = 20012230244. Its totient is φ = 20012230242.

The previous prime is 20012230171. The next prime is 20012230247. The reversal of 20012230243 is 34203221002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012230243 - 2¹³ = 20012222051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20012230243.

It is not a weakly prime, because it can be changed into another prime (20012230247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006115121 + 10006115122.

It is an arithmetic number, because the mean of its divisors is an integer number (10006115122).

Almost surely, 2^20012230243 is an apocalyptic number.

20012230243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012230243 is an equidigital number, since it uses as much as digits as its factorization.

20012230243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20012230243 its reverse (34203221002), we get a palindrome (54215451245).

The spelling of 20012230243 in words is "twenty billion, twelve million, two hundred thirty thousand, two hundred forty-three".