220021213120 has 28 divisors (see below), whose sum is σ = 523925514504. Its totient is φ = 88008485120.

The previous prime is 220021213081. The next prime is 220021213171. The reversal of 220021213120 is 21312120022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 220021213094 and 220021213103.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 343782826 + ... + 343783465.

It is an arithmetic number, because the mean of its divisors is an integer number (18711625518).

Almost surely, 2^220021213120 is an apocalyptic number.

220021213120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220021213120 is an abundant number, since it is smaller than the sum of its proper divisors (303904301384).

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

220021213120 is an equidigital number, since it uses as much as digits as its factorization.

220021213120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687566308 (or 687566298 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 220021213120 its reverse (21312120022), we get a palindrome (241333333142).

The spelling of 220021213120 in words is "two hundred twenty billion, twenty-one million, two hundred thirteen thousand, one hundred twenty".