221030032020 has 144 divisors (see below), whose sum is σ = 757817444160. Its totient is φ = 47862130176.

The previous prime is 221030032019. The next prime is 221030032061. The reversal of 221030032020 is 20230030122.

221030032020 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 (15).

It is a congruent number.

It is an unprimeable number.

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, 1922569 + ... + 2034288.

It is an arithmetic number, because the mean of its divisors is an integer number (5262621140).

Almost surely, 2^221030032020 is an apocalyptic number.

221030032020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221030032020 is an abundant number, since it is smaller than the sum of its proper divisors (536787412140).

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

221030032020 is a wasteful number, since it uses less digits than its factorization.

221030032020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3956902 (or 3956893 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 221030032020 its reverse (20230030122), we get a palindrome (241260062142).

The spelling of 221030032020 in words is "two hundred twenty-one billion, thirty million, thirty-two thousand, twenty".