111221022112112 has 20 divisors (see below), whose sum is σ = 235080796737336. Its totient is φ = 50555010050880.

The previous prime is 111221022112111. The next prime is 111221022112139. The reversal of 111221022112112 is 211211220122111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221022112111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315968812643 + ... + 315968812994.

Almost surely, 2^{111221022112112} is an apocalyptic number.

It is an amenable number.

111221022112112 is an abundant number, since it is smaller than the sum of its proper divisors (123859774625224).

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

111221022112112 is a wasteful number, since it uses less digits than its factorization.

111221022112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631937625656 (or 631937625650 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111221022112112 its reverse (211211220122111), we get a palindrome (322432242234223).

The spelling of 111221022112112 in words is "one hundred eleven trillion, two hundred twenty-one billion, twenty-two million, one hundred twelve thousand, one hundred twelve".