111220202112 has 128 divisors (see below), whose sum is σ = 312544320000. Its totient is φ = 34945219584.

The previous prime is 111220202099. The next prime is 111220202129. The reversal of 111220202112 is 211202022111.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 111220202091 and 111220202100.

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, 1413603 + ... + 1490205.

It is an arithmetic number, because the mean of its divisors is an integer number (2441752500).

Almost surely, 2^111220202112 is an apocalyptic number.

111220202112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111220202112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156272160000).

111220202112 is an abundant number, since it is smaller than the sum of its proper divisors (201324117888).

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

111220202112 is a wasteful number, since it uses less digits than its factorization.

111220202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76838 (or 76826 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111220202112 its reverse (211202022111), we get a palindrome (322422224223).

The spelling of 111220202112 in words is "one hundred eleven billion, two hundred twenty million, two hundred two thousand, one hundred twelve".