220021210020 has 48 divisors (see below), whose sum is σ = 616129254720. Its totient is φ = 58665668736.

The previous prime is 220021210007. The next prime is 220021210021. The reversal of 220021210020 is 20012120022.

220021210020 is digitally balanced in base 2 and base 3, because in such bases 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 (12).

It is a junction number, because it is equal to n+sod(n) for n = 220021209978 and 220021210005.

It is not an unprimeable number, because it can be changed into a prime (220021210021) 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 15 ways as a sum of consecutive naturals, for example, 337351 + ... + 744209.

It is an arithmetic number, because the mean of its divisors is an integer number (12836026140).

Almost surely, 2^220021210020 is an apocalyptic number.

220021210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220021210020 is an abundant number, since it is smaller than the sum of its proper divisors (396108044700).

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

220021210020 is a wasteful number, since it uses less digits than its factorization.

220021210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415884 (or 415882 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 220021210020 its reverse (20012120022), we get a palindrome (240033330042).

The spelling of 220021210020 in words is "two hundred twenty billion, twenty-one million, two hundred ten thousand, twenty".