20000220444220 has 48 divisors (see below), whose sum is σ = 42193151864640. Its totient is φ = 7963400899584.

The previous prime is 20000220444157. The next prime is 20000220444293. The reversal of 20000220444220 is 2244402200002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20000220444191 and 20000220444200.

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 15 ways as a sum of consecutive naturals, for example, 20438772 + ... + 21394948.

It is an arithmetic number, because the mean of its divisors is an integer number (879023997180).

Almost surely, 2^{20000220444220} is an apocalyptic number.

20000220444220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000220444220 is an abundant number, since it is smaller than the sum of its proper divisors (22192931420420).

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

20000220444220 is a wasteful number, since it uses less digits than its factorization.

20000220444220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960982 (or 960980 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 20000220444220 its reverse (2244402200002), we get a palindrome (22244622644222).

The spelling of 20000220444220 in words is "twenty trillion, two hundred twenty million, four hundred forty-four thousand, two hundred twenty".