112221121201220 has 12 divisors (see below), whose sum is σ = 235664354522604. Its totient is φ = 44888448480480.

The previous prime is 112221121201187. The next prime is 112221121201243. The reversal of 112221121201220 is 22102121122211.

It can be written as a sum of positive squares in 2 ways, for example, as 64418859090496 + 47802262110724 = 8026136^2 + 6913918^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 5611056060061 = 112221121201220 / (1 + 1 + 2 + 2 + 2 + 1 + 1 + 2 + 1 + 2 + 0 + 1 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 112221121201192 and 112221121201201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2805528030011 + ... + 2805528030050.

It is an arithmetic number, because the mean of its divisors is an integer number (19638696210217).

Almost surely, 2^{112221121201220} is an apocalyptic number.

112221121201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112221121201220 is an abundant number, since it is smaller than the sum of its proper divisors (123443233321384).

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

112221121201220 is a wasteful number, since it uses less digits than its factorization.

112221121201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611056060070 (or 5611056060068 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 112221121201220 its reverse (22102121122211), we get a palindrome (134323242323431).

The spelling of 112221121201220 in words is "one hundred twelve trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred one thousand, two hundred twenty".