220122112221220 has 24 divisors (see below), whose sum is σ = 504279747998208. Its totient is φ = 80044404444000.

The previous prime is 220122112221181. The next prime is 220122112221223. The reversal of 220122112221220 is 22122211221022.

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 = 220122112221191 and 220122112221200.

It is not an unprimeable number, because it can be changed into a prime (220122112221223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500277527556 + ... + 500277527995.

It is an arithmetic number, because the mean of its divisors is an integer number (21011656166592).

Almost surely, 2^{220122112221220} is an apocalyptic number.

220122112221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220122112221220 is an abundant number, since it is smaller than the sum of its proper divisors (284157635776988).

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

220122112221220 is a wasteful number, since it uses less digits than its factorization.

220122112221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000555055571 (or 1000555055569 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 220122112221220 its reverse (22122211221022), we get a palindrome (242244323442242).

It can be divided in two parts, 2201221 and 12221220, that added together give a palindrome (14422441).

The spelling of 220122112221220 in words is "two hundred twenty trillion, one hundred twenty-two billion, one hundred twelve million, two hundred twenty-one thousand, two hundred twenty".