20342420210220 has 24 divisors (see below), whose sum is σ = 56958776588784. Its totient is φ = 5424645389376.

The previous prime is 20342420210179. The next prime is 20342420210243. The reversal of 20342420210220 is 2201202424302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169520168359 + ... + 169520168478.

It is an arithmetic number, because the mean of its divisors is an integer number (2373282357866).

Almost surely, 2^{20342420210220} is an apocalyptic number.

20342420210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20342420210220 is an abundant number, since it is smaller than the sum of its proper divisors (36616356378564).

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

20342420210220 is a wasteful number, since it uses less digits than its factorization.

20342420210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339040336849 (or 339040336847 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20342420210220 its reverse (2201202424302), we get a palindrome (22543622634522).

The spelling of 20342420210220 in words is "twenty trillion, three hundred forty-two billion, four hundred twenty million, two hundred ten thousand, two hundred twenty".