20012011011983 has 2 divisors, whose sum is σ = 20012011011984. Its totient is φ = 20012011011982.

The previous prime is 20012011011929. The next prime is 20012011011997. The reversal of 20012011011983 is 38911011021002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012011011983 - 2²⁴ = 20011994234767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012011019983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006005505991 + 10006005505992.

It is an arithmetic number, because the mean of its divisors is an integer number (10006005505992).

Almost surely, 2^{20012011011983} is an apocalyptic number.

20012011011983 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012011011983 is an equidigital number, since it uses as much as digits as its factorization.

20012011011983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 29.

Adding to 20012011011983 its reverse (38911011021002), we get a palindrome (58923022032985).

The spelling of 20012011011983 in words is "twenty trillion, twelve billion, eleven million, eleven thousand, nine hundred eighty-three".