2122110121111 has 2 divisors, whose sum is σ = 2122110121112. Its totient is φ = 2122110121110.

The previous prime is 2122110121093. The next prime is 2122110121139. The reversal of 2122110121111 is 1111210112212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122110121111 is a prime.

It is a super-2 number, since 2×2122110121111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122110121141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061055060555 + 1061055060556.

It is an arithmetic number, because the mean of its divisors is an integer number (1061055060556).

Almost surely, 2^{2122110121111} is an apocalyptic number.

2122110121111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122110121111 is an equidigital number, since it uses as much as digits as its factorization.

2122110121111 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 16.

Adding to 2122110121111 its reverse (1111210112212), we get a palindrome (3233320233323).

The spelling of 2122110121111 in words is "two trillion, one hundred twenty-two billion, one hundred ten million, one hundred twenty-one thousand, one hundred eleven".