12001020020111 has 2 divisors, whose sum is σ = 12001020020112. Its totient is φ = 12001020020110.

The previous prime is 12001020020083. The next prime is 12001020020113. The reversal of 12001020020111 is 11102002010021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12001020020111 - 2¹⁴ = 12001020003727 is a prime.

Together with 12001020020113, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12001020020092 and 12001020020101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12001020020113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000510010055 + 6000510010056.

It is an arithmetic number, because the mean of its divisors is an integer number (6000510010056).

Almost surely, 2^{12001020020111} is an apocalyptic number.

12001020020111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001020020111 is an equidigital number, since it uses as much as digits as its factorization.

12001020020111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12001020020111 its reverse (11102002010021), we get a palindrome (23103022030132).

The spelling of 12001020020111 in words is "twelve trillion, one billion, twenty million, twenty thousand, one hundred eleven".