202221201221020 has 24 divisors (see below), whose sum is σ = 425051637033744. Its totient is φ = 80814744398976.

The previous prime is 202221201220933. The next prime is 202221201221029. The reversal of 202221201221020 is 20122102122202.

202221201221020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202221201221029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4608483102 + ... + 4608526981.

It is an arithmetic number, because the mean of its divisors is an integer number (17710484876406).

Almost surely, 2^{202221201221020} is an apocalyptic number.

202221201221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202221201221020 is an abundant number, since it is smaller than the sum of its proper divisors (222830435812724).

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

202221201221020 is a wasteful number, since it uses less digits than its factorization.

202221201221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9217011189 (or 9217011187 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 202221201221020 its reverse (20122102122202), we get a palindrome (222343303343222).

The spelling of 202221201221020 in words is "two hundred two trillion, two hundred twenty-one billion, two hundred one million, two hundred twenty-one thousand, twenty".