20012020210243 has 2 divisors, whose sum is σ = 20012020210244. Its totient is φ = 20012020210242.

The previous prime is 20012020210211. The next prime is 20012020210261. The reversal of 20012020210243 is 34201202021002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012020210243 - 2⁵ = 20012020210211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20012020210243.

It is not a weakly prime, because it can be changed into another prime (20012020210943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006010105121 + 10006010105122.

It is an arithmetic number, because the mean of its divisors is an integer number (10006010105122).

Almost surely, 2^{20012020210243} is an apocalyptic number.

20012020210243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012020210243 is an equidigital number, since it uses as much as digits as its factorization.

20012020210243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20012020210243 its reverse (34201202021002), we get a palindrome (54213222231245).

The spelling of 20012020210243 in words is "twenty trillion, twelve billion, twenty million, two hundred ten thousand, two hundred forty-three".