111211101112 has 24 divisors (see below), whose sum is σ = 220073220000. Its totient is φ = 52678941264.

The previous prime is 111211101077. The next prime is 111211101119. The reversal of 111211101112 is 211101112111.

It is a junction number, because it is equal to n+sod(n) for n = 111211101092 and 111211101101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211101119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19251112 + ... + 19256887.

It is an arithmetic number, because the mean of its divisors is an integer number (9169717500).

Almost surely, 2^111211101112 is an apocalyptic number.

It is an amenable number.

111211101112 is a deficient number, since it is larger than the sum of its proper divisors (108862118888).

111211101112 is a wasteful number, since it uses less digits than its factorization.

111211101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38508043 (or 38508020 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111211101112 its reverse (211101112111), we get a palindrome (322312213223).

It can be divided in two parts, 1112 and 11101112, that added together give a square (11102224 = 3332²).

The spelling of 111211101112 in words is "one hundred eleven billion, two hundred eleven million, one hundred one thousand, one hundred twelve".