12012020011111 has 2 divisors, whose sum is σ = 12012020011112. Its totient is φ = 12012020011110.

The previous prime is 12012020011067. The next prime is 12012020011133. The reversal of 12012020011111 is 11111002021021.

It is a happy number.

12012020011111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12012020011111 - 2¹¹ = 12012020009063 is a prime.

It is a super-2 number, since 2×12012020011111² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12012020011091 and 12012020011100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12012029011111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006010005555 + 6006010005556.

It is an arithmetic number, because the mean of its divisors is an integer number (6006010005556).

Almost surely, 2^{12012020011111} is an apocalyptic number.

12012020011111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012020011111 is an equidigital number, since it uses as much as digits as its factorization.

12012020011111 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 13.

Adding to 12012020011111 its reverse (11111002021021), we get a palindrome (23123022032132).

The spelling of 12012020011111 in words is "twelve trillion, twelve billion, twenty million, eleven thousand, one hundred eleven".