11122012111 has 24 divisors (see below), whose sum is σ = 13394142720. Its totient is φ = 9197439552.

The previous prime is 11122012081. The next prime is 11122012123. The reversal of 11122012111 is 11121022111.

It is a happy number.

It is not a de Polignac number, because 11122012111 - 2³³ = 2532077519 is a prime.

It is a super-3 number, since 3×11122012111³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11122012091 and 11122012100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122012141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2801650 + ... + 2805616.

It is an arithmetic number, because the mean of its divisors is an integer number (558089280).

Almost surely, 2^11122012111 is an apocalyptic number.

11122012111 is a deficient number, since it is larger than the sum of its proper divisors (2272130609).

11122012111 is a wasteful number, since it uses less digits than its factorization.

11122012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5983 (or 5976 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11122012111 its reverse (11121022111), we get a palindrome (22243034222).

The spelling of 11122012111 in words is "eleven billion, one hundred twenty-two million, twelve thousand, one hundred eleven".