111221101112 has 32 divisors (see below), whose sum is σ = 227511227520. Its totient is φ = 50552041440.

The previous prime is 111221101093. The next prime is 111221101133. The reversal of 111221101112 is 211101122111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2214503 + ... + 2264169.

It is an arithmetic number, because the mean of its divisors is an integer number (7109725860).

Almost surely, 2^111221101112 is an apocalyptic number.

It is an amenable number.

111221101112 is an abundant number, since it is smaller than the sum of its proper divisors (116290126408).

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

111221101112 is a wasteful number, since it uses less digits than its factorization.

111221101112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75131 (or 75127 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111221101112 its reverse (211101122111), we get a palindrome (322322223223).

The spelling of 111221101112 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred one thousand, one hundred twelve".