112021131121220 has 96 divisors (see below), whose sum is σ = 249086183028480. Its totient is φ = 42199794685440.

The previous prime is 112021131121219. The next prime is 112021131121327. The reversal of 112021131121220 is 22121131120211.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 112021131121192 and 112021131121201.

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, 587686049 + ... + 587876631.

It is an arithmetic number, because the mean of its divisors is an integer number (2594647739880).

Almost surely, 2^{112021131121220} is an apocalyptic number.

112021131121220 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 112021131121220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124543091514240).

112021131121220 is an abundant number, since it is smaller than the sum of its proper divisors (137065051907260).

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

112021131121220 is a wasteful number, since it uses less digits than its factorization.

112021131121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199725 (or 199723 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 112021131121220 its reverse (22121131120211), we get a palindrome (134142262241431).

The spelling of 112021131121220 in words is "one hundred twelve trillion, twenty-one billion, one hundred thirty-one million, one hundred twenty-one thousand, two hundred twenty".