220020100020 has 144 divisors (see below), whose sum is σ = 762855545088. Its totient is φ = 50282449920.

The previous prime is 220020100007. The next prime is 220020100021. The reversal of 220020100020 is 20001020022.

220020100020 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 (9).

It is a junction number, because it is equal to n+sod(n) for n = 220020099975 and 220020100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220020100021) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 12902700 + ... + 12919740.

It is an arithmetic number, because the mean of its divisors is an integer number (5297607952).

Almost surely, 2^220020100020 is an apocalyptic number.

220020100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220020100020 is an abundant number, since it is smaller than the sum of its proper divisors (542835445068).

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

220020100020 is a wasteful number, since it uses less digits than its factorization.

220020100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27310 (or 27305 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 220020100020 its reverse (20001020022), we get a palindrome (240021120042).

The spelling of 220020100020 in words is "two hundred twenty billion, twenty million, one hundred thousand, twenty".