11112122112111 has 48 divisors (see below), whose sum is σ = 16257105184320. Its totient is φ = 7313328000000.

The previous prime is 11112122112053. The next prime is 11112122112121. The reversal of 11112122112111 is 11121122121111.

11112122112111 is a `hidden beast` number, since 111 + 121 + 221 + 1 + 211 + 1 = 666.

It is not a de Polignac number, because 11112122112111 - 2¹⁰ = 11112122111087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112122112121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1122318261 + ... + 1122328161.

It is an arithmetic number, because the mean of its divisors is an integer number (338689691340).

Almost surely, 2^{11112122112111} is an apocalyptic number.

11112122112111 is a deficient number, since it is larger than the sum of its proper divisors (5144983072209).

11112122112111 is a wasteful number, since it uses less digits than its factorization.

11112122112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13488 (or 13485 counting only the distinct ones).

The product of its digits is 16, while the sum is 18.

Adding to 11112122112111 its reverse (11121122121111), we get a palindrome (22233244233222).

The spelling of 11112122112111 in words is "eleven trillion, one hundred twelve billion, one hundred twenty-two million, one hundred twelve thousand, one hundred eleven".