2112111022111 has 2 divisors, whose sum is σ = 2112111022112. Its totient is φ = 2112111022110.

The previous prime is 2112111022103. The next prime is 2112111022121. The reversal of 2112111022111 is 1112201112112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2112111022111 - 2³ = 2112111022103 is a prime.

It is a super-2 number, since 2×2112111022111² (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 (2112111022121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056055511055 + 1056055511056.

It is an arithmetic number, because the mean of its divisors is an integer number (1056055511056).

Almost surely, 2^{2112111022111} is an apocalyptic number.

2112111022111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112111022111 is an equidigital number, since it uses as much as digits as its factorization.

2112111022111 is an evil number, because the sum of its binary digits is even.

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

Adding to 2112111022111 its reverse (1112201112112), we get a palindrome (3224312134223).

Subtracting from 2112111022111 its reverse (1112201112112), we obtain a palindrome (999909909999).

The spelling of 2112111022111 in words is "two trillion, one hundred twelve billion, one hundred eleven million, twenty-two thousand, one hundred eleven".