111202021112 has 64 divisors (see below), whose sum is σ = 256856671680. Its totient is φ = 43951444992.

The previous prime is 111202021087. The next prime is 111202021123. The reversal of 111202021112 is 211120202111.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 725828 + ... + 865580.

It is an arithmetic number, because the mean of its divisors is an integer number (4013385495).

Almost surely, 2^111202021112 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 111202021112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128428335840).

111202021112 is an abundant number, since it is smaller than the sum of its proper divisors (145654650568).

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

111202021112 is a wasteful number, since it uses less digits than its factorization.

111202021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140872 (or 140868 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111202021112 its reverse (211120202111), we get a palindrome (322322223223).

It can be divided in two parts, 11120202111 and 2, that multiplied together give a palindrome (22240404222).

The spelling of 111202021112 in words is "one hundred eleven billion, two hundred two million, twenty-one thousand, one hundred twelve".