12111011021112 has 32 divisors (see below), whose sum is σ = 30344960826000. Its totient is φ = 4028012570624.

The previous prime is 12111011021077. The next prime is 12111011021117. The reversal of 12111011021112 is 21112011011121.

It is a junction number, because it is equal to n+sod(n) for n = 12111011021091 and 12111011021100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111011021117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561932943 + ... + 561954494.

Almost surely, 2^{12111011021112} is an apocalyptic number.

12111011021112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12111011021112 is an abundant number, since it is smaller than the sum of its proper divisors (18233949804888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12111011021112 is a wasteful number, since it uses less digits than its factorization.

12111011021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123887895 (or 1123887891 counting only the distinct ones).

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

Adding to 12111011021112 its reverse (21112011011121), we get a palindrome (33223022032233).

Subtracting 12111011021112 from its reverse (21112011011121), we obtain a palindrome (9000999990009).

The spelling of 12111011021112 in words is "twelve trillion, one hundred eleven billion, eleven million, twenty-one thousand, one hundred twelve".