111021001112 has 64 divisors (see below), whose sum is σ = 244307404800. Its totient is φ = 46316350080.

The previous prime is 111021001093. The next prime is 111021001139. The reversal of 111021001112 is 211100120111.

It is a junction number, because it is equal to n+sod(n) for n = 111021001093 and 111021001102.

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, 137378 + ... + 490830.

It is an arithmetic number, because the mean of its divisors is an integer number (3817303200).

Almost surely, 2^111021001112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111021001112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122153702400).

111021001112 is an abundant number, since it is smaller than the sum of its proper divisors (133286403688).

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

111021001112 is a wasteful number, since it uses less digits than its factorization.

111021001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353616 (or 353612 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111021001112 its reverse (211100120111), we get a palindrome (322121121223).

The spelling of 111021001112 in words is "one hundred eleven billion, twenty-one million, one thousand, one hundred twelve".