1122211011111 has 16 divisors (see below), whose sum is σ = 1538432060928. Its totient is φ = 727199985600.

The previous prime is 1122211011109. The next prime is 1122211011133. The reversal of 1122211011111 is 1111101122211.

It is not a de Polignac number, because 1122211011111 - 2¹ = 1122211011109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122211011161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16800001 + ... + 16866666.

It is an arithmetic number, because the mean of its divisors is an integer number (96152003808).

Almost surely, 2^{1122211011111} is an apocalyptic number.

1122211011111 is a deficient number, since it is larger than the sum of its proper divisors (416221049817).

1122211011111 is a wasteful number, since it uses less digits than its factorization.

1122211011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33666982.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 1122211011111 its reverse (1111101122211), we get a palindrome (2233312133322).

The spelling of 1122211011111 in words is "one trillion, one hundred twenty-two billion, two hundred eleven million, eleven thousand, one hundred eleven".