112112221221220 has 36 divisors (see below), whose sum is σ = 258784656097212. Its totient is φ = 40768080443200.

The previous prime is 112112221221199. The next prime is 112112221221227. The reversal of 112112221221220 is 22122122211211.

It can be written as a sum of positive squares in 2 ways, for example, as 82471862285604 + 29640358935616 = 9081402^2 + 5444296^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 112112221221191 and 112112221221200.

It is not an unprimeable number, because it can be changed into a prime (112112221221227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23163679651 + ... + 23163684490.

It is an arithmetic number, because the mean of its divisors is an integer number (7188462669367).

Almost surely, 2^{112112221221220} is an apocalyptic number.

112112221221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112112221221220 is an abundant number, since it is smaller than the sum of its proper divisors (146672434875992).

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

112112221221220 is a wasteful number, since it uses less digits than its factorization.

112112221221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46327364172 (or 46327364159 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 112112221221220 its reverse (22122122211211), we get a palindrome (134234343432431).

The spelling of 112112221221220 in words is "one hundred twelve trillion, one hundred twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty".