20012011011143 has 2 divisors, whose sum is σ = 20012011011144. Its totient is φ = 20012011011142.

The previous prime is 20012011011043. The next prime is 20012011011277. The reversal of 20012011011143 is 34111011021002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20012011011143 - 2¹⁰ = 20012011010119 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012011011043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006005505571 + 10006005505572.

It is an arithmetic number, because the mean of its divisors is an integer number (10006005505572).

Almost surely, 2^{20012011011143} is an apocalyptic number.

20012011011143 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012011011143 is an equidigital number, since it uses as much as digits as its factorization.

20012011011143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 20012011011143 its reverse (34111011021002), we get a palindrome (54123022032145).

The spelling of 20012011011143 in words is "twenty trillion, twelve billion, eleven million, eleven thousand, one hundred forty-three".