12021020012011 has 2 divisors, whose sum is σ = 12021020012012. Its totient is φ = 12021020012010.

The previous prime is 12021020011933. The next prime is 12021020012051. The reversal of 12021020012011 is 11021002012021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021020012011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021020011982 and 12021020012000.

It is not a weakly prime, because it can be changed into another prime (12021020012051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010510006005 + 6010510006006.

It is an arithmetic number, because the mean of its divisors is an integer number (6010510006006).

Almost surely, 2^{12021020012011} is an apocalyptic number.

12021020012011 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021020012011 is an equidigital number, since it uses as much as digits as its factorization.

12021020012011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12021020012011 its reverse (11021002012021), we get a palindrome (23042022024032).

The spelling of 12021020012011 in words is "twelve trillion, twenty-one billion, twenty million, twelve thousand, eleven".