220120221220 has 48 divisors (see below), whose sum is σ = 463194547200. Its totient is φ = 87868793600.

The previous prime is 220120221169. The next prime is 220120221221. The reversal of 220120221220 is 22122021022.

It is a junction number, because it is equal to n+sod(n) for n = 220120221194 and 220120221203.

It is not an unprimeable number, because it can be changed into a prime (220120221221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37942320 + ... + 37948120.

It is an arithmetic number, because the mean of its divisors is an integer number (9649886400).

Almost surely, 2^220120221220 is an apocalyptic number.

220120221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220120221220 is an abundant number, since it is smaller than the sum of its proper divisors (243074325980).

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

220120221220 is a wasteful number, since it uses less digits than its factorization.

220120221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9348 (or 9346 counting only the distinct ones).

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

Adding to 220120221220 its reverse (22122021022), we get a palindrome (242242242242).

The spelling of 220120221220 in words is "two hundred twenty billion, one hundred twenty million, two hundred twenty-one thousand, two hundred twenty".