220122201220 has 24 divisors (see below), whose sum is σ = 464651742744. Its totient is φ = 87592667136.

The previous prime is 220122201193. The next prime is 220122201223. The reversal of 220122201220 is 22102221022.

It can be written as a sum of positive squares in 4 ways, for example, as 140564736 + 219981636484 = 11856^2 + 469022^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220122201194 and 220122201203.

It is not an unprimeable number, because it can be changed into a prime (220122201223) 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, 28509379 + ... + 28517098.

It is an arithmetic number, because the mean of its divisors is an integer number (19360489281).

Almost surely, 2^220122201220 is an apocalyptic number.

220122201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220122201220 is an abundant number, since it is smaller than the sum of its proper divisors (244529541524).

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

220122201220 is a wasteful number, since it uses less digits than its factorization.

220122201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57026679 (or 57026677 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 220122201220 its reverse (22102221022), we get a palindrome (242224422242).

The spelling of 220122201220 in words is "two hundred twenty billion, one hundred twenty-two million, two hundred one thousand, two hundred twenty".