1122112112111 has 2 divisors, whose sum is σ = 1122112112112. Its totient is φ = 1122112112110.

The previous prime is 1122112112087. The next prime is 1122112112119. The reversal of 1122112112111 is 1112112112211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1122112112111 - 2²² = 1122107917807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1122112112111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122112112119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561056056055 + 561056056056.

It is an arithmetic number, because the mean of its divisors is an integer number (561056056056).

Almost surely, 2^{1122112112111} is an apocalyptic number.

1122112112111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122112112111 is an equidigital number, since it uses as much as digits as its factorization.

1122112112111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1122112112111 its reverse (1112112112211), we get a palindrome (2234224224322).

The spelling of 1122112112111 in words is "one trillion, one hundred twenty-two billion, one hundred twelve million, one hundred twelve thousand, one hundred eleven".