12011122022111 has 2 divisors, whose sum is σ = 12011122022112. Its totient is φ = 12011122022110.

The previous prime is 12011122022057. The next prime is 12011122022147. The reversal of 12011122022111 is 11122022111021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12011122022111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12011122022111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011122022171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005561011055 + 6005561011056.

It is an arithmetic number, because the mean of its divisors is an integer number (6005561011056).

Almost surely, 2^{12011122022111} is an apocalyptic number.

12011122022111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011122022111 is an equidigital number, since it uses as much as digits as its factorization.

12011122022111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12011122022111 its reverse (11122022111021), we get a palindrome (23133144133132).

It can be divided in two parts, 1201112 and 2022111, that added together give a palindrome (3223223).

The spelling of 12011122022111 in words is "twelve trillion, eleven billion, one hundred twenty-two million, twenty-two thousand, one hundred eleven".