220001321020 has 24 divisors (see below), whose sum is σ = 497541449664. Its totient is φ = 81231256896.

The previous prime is 220001321003. The next prime is 220001321047. The reversal of 220001321020 is 20123100022.

220001321020 is digitally balanced in base 3, 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 (13).

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 7 ways as a sum of consecutive naturals, for example, 423079204 + ... + 423079723.

It is an arithmetic number, because the mean of its divisors is an integer number (20730893736).

Almost surely, 2^220001321020 is an apocalyptic number.

220001321020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220001321020 is an abundant number, since it is smaller than the sum of its proper divisors (277540128644).

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

220001321020 is a wasteful number, since it uses less digits than its factorization.

220001321020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846158949 (or 846158947 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 220001321020 its reverse (20123100022), we get a palindrome (240124421042).

The spelling of 220001321020 in words is "two hundred twenty billion, one million, three hundred twenty-one thousand, twenty".