112121112220 has 96 divisors (see below), whose sum is σ = 257920367040. Its totient is φ = 40688732160.

The previous prime is 112121112209. The next prime is 112121112251. The reversal of 112121112220 is 22211121211.

It is a super-2 number, since 2×112121112220² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 112121112194 and 112121112203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34937976 + ... + 34941184.

It is an arithmetic number, because the mean of its divisors is an integer number (2686670490).

Almost surely, 2^112121112220 is an apocalyptic number.

112121112220 is a gapful number since it is divisible by the number (10) 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 112121112220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128960183520).

112121112220 is an abundant number, since it is smaller than the sum of its proper divisors (145799254820).

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

112121112220 is a wasteful number, since it uses less digits than its factorization.

112121112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5495 (or 5493 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 112121112220 its reverse (22211121211), we get a palindrome (134332233431).

The spelling of 112121112220 in words is "one hundred twelve billion, one hundred twenty-one million, one hundred twelve thousand, two hundred twenty".