12211110122111 has 2 divisors, whose sum is σ = 12211110122112. Its totient is φ = 12211110122110.

The previous prime is 12211110122053. The next prime is 12211110122213. The reversal of 12211110122111 is 11122101111221.

It is a weak prime.

It is an emirp because it is prime and its reverse (11122101111221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12211110122111 - 2³⁴ = 12193930252927 is a prime.

It is a super-2 number, since 2×12211110122111² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12211110122111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12211110122311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105555061055 + 6105555061056.

It is an arithmetic number, because the mean of its divisors is an integer number (6105555061056).

Almost surely, 2^{12211110122111} is an apocalyptic number.

12211110122111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211110122111 is an equidigital number, since it uses as much as digits as its factorization.

12211110122111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 12211110122111 its reverse (11122101111221), we get a palindrome (23333211233332).

The spelling of 12211110122111 in words is "twelve trillion, two hundred eleven billion, one hundred ten million, one hundred twenty-two thousand, one hundred eleven".