112221220121220 has 192 divisors, whose sum is σ = 380511690854400. Its totient is φ = 24139603929600.

The previous prime is 112221220121209. The next prime is 112221220121221. The reversal of 112221220121220 is 22121022122211.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (112221220121221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45360615 + ... + 47770574.

It is an arithmetic number, because the mean of its divisors is an integer number (1981831723200).

Almost surely, 2^{112221220121220} is an apocalyptic number.

112221220121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112221220121220 is an abundant number, since it is smaller than the sum of its proper divisors (268290470733180).

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

112221220121220 is a wasteful number, since it uses less digits than its factorization.

112221220121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93131378 (or 93131376 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 112221220121220 its reverse (22121022122211), we get a palindrome (134342242243431).

The spelling of 112221220121220 in words is "one hundred twelve trillion, two hundred twenty-one billion, two hundred twenty million, one hundred twenty-one thousand, two hundred twenty".