12100222211111 has 2 divisors, whose sum is σ = 12100222211112. Its totient is φ = 12100222211110.

The previous prime is 12100222211101. The next prime is 12100222211113. The reversal of 12100222211111 is 11111222200121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12100222211111 - 2²⁶ = 12100155102247 is a prime.

Together with 12100222211113, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12100222211111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12100222211113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050111105555 + 6050111105556.

It is an arithmetic number, because the mean of its divisors is an integer number (6050111105556).

Almost surely, 2^{12100222211111} is an apocalyptic number.

12100222211111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100222211111 is an equidigital number, since it uses as much as digits as its factorization.

12100222211111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 12100222211111 its reverse (11111222200121), we get a palindrome (23211444411232).

The spelling of 12100222211111 in words is "twelve trillion, one hundred billion, two hundred twenty-two million, two hundred eleven thousand, one hundred eleven".