220122212220 has 72 divisors (see below), whose sum is σ = 668726918496. Its totient is φ = 58609333632.

The previous prime is 220122212203. The next prime is 220122212269. The reversal of 220122212220 is 22212221022.

220122212220 is a `hidden beast` number, since 220 + 1 + 2 + 221 + 2 + 220 = 666.

220122212220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 220122212193 and 220122212202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 818832 + ... + 1053911.

It is an arithmetic number, because the mean of its divisors is an integer number (9287873868).

Almost surely, 2^220122212220 is an apocalyptic number.

220122212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220122212220 is an abundant number, since it is smaller than the sum of its proper divisors (448604706276).

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

220122212220 is a wasteful number, since it uses less digits than its factorization.

220122212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873411 (or 1873406 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 220122212220 its reverse (22212221022), we get a palindrome (242334433242).

The spelling of 220122212220 in words is "two hundred twenty billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twenty".