220112212221220 has 96 divisors (see below), whose sum is σ = 520665277612032. Its totient is φ = 77437734000000.

The previous prime is 220112212221163. The next prime is 220112212221241. The reversal of 220112212221220 is 22122212211022.

It is a super-2 number, since 2×220112212221220² (a number of 29 digits) contains 22 as substring.

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 = 220112212221191 and 220112212221200.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20640345 + ... + 29432095.

It is an arithmetic number, because the mean of its divisors is an integer number (5423596641792).

Almost surely, 2^{220112212221220} is an apocalyptic number.

220112212221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220112212221220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260332638806016).

220112212221220 is an abundant number, since it is smaller than the sum of its proper divisors (300553065390812).

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

220112212221220 is a wasteful number, since it uses less digits than its factorization.

220112212221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8795473 (or 8795471 counting only the distinct ones).

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

Adding to 220112212221220 its reverse (22122212211022), we get a palindrome (242234424432242).

The spelling of 220112212221220 in words is "two hundred twenty trillion, one hundred twelve billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twenty".