1112122021111 has 2 divisors, whose sum is σ = 1112122021112. Its totient is φ = 1112122021110.

The previous prime is 1112122021093. The next prime is 1112122021141. The reversal of 1112122021111 is 1111202212111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1112122021111 - 2¹³ = 1112122012919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112122021141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556061010555 + 556061010556.

It is an arithmetic number, because the mean of its divisors is an integer number (556061010556).

Almost surely, 2^{1112122021111} is an apocalyptic number.

1112122021111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112122021111 is an equidigital number, since it uses as much as digits as its factorization.

1112122021111 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 1112122021111 its reverse (1111202212111), we get a palindrome (2223324233222).

The spelling of 1112122021111 in words is "one trillion, one hundred twelve billion, one hundred twenty-two million, twenty-one thousand, one hundred eleven".