11012112111 has 48 divisors (see below), whose sum is σ = 19863398912. Its totient is φ = 5280517440.

The previous prime is 11012112011. The next prime is 11012112119. The reversal of 11012112111 is 11121121011.

It is not a de Polignac number, because 11012112111 - 2¹¹ = 11012110063 is a prime.

It is a super-2 number, since 2×11012112111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012112119) 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, 133651 + ... + 199716.

Almost surely, 2^11012112111 is an apocalyptic number.

11012112111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11012112111 is a deficient number, since it is larger than the sum of its proper divisors (8851286801).

11012112111 is a wasteful number, since it uses less digits than its factorization.

11012112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333412 (or 333401 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11012112111 its reverse (11121121011), we get a palindrome (22133233122).

The spelling of 11012112111 in words is "eleven billion, twelve million, one hundred twelve thousand, one hundred eleven".