111211101101112 has 64 divisors (see below), whose sum is σ = 299371857465600. Its totient is φ = 34298405383680.

The previous prime is 111211101101081. The next prime is 111211101101147. The reversal of 111211101101112 is 211101101112111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111211101101091 and 111211101101100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2309943964 + ... + 2309992107.

It is an arithmetic number, because the mean of its divisors is an integer number (4677685272900).

Almost surely, 2^{111211101101112} is an apocalyptic number.

111211101101112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111211101101112 is an abundant number, since it is smaller than the sum of its proper divisors (188160756364488).

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

111211101101112 is a wasteful number, since it uses less digits than its factorization.

111211101101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4619936156 (or 4619936152 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 15.

Adding to 111211101101112 its reverse (211101101112111), we get a palindrome (322312202213223).

It can be divided in two parts, 111 and 211101101112, that multiplied together give a palindrome (23432222223432).

The spelling of 111211101101112 in words is "one hundred eleven trillion, two hundred eleven billion, one hundred one million, one hundred one thousand, one hundred twelve".