202321200020 has 24 divisors (see below), whose sum is σ = 449867139624. Its totient is φ = 76167981056.

The previous prime is 202321200019. The next prime is 202321200023. The reversal of 202321200020 is 20002123202.

It can be written as a sum of positive squares in 4 ways, for example, as 104974704004 + 97346496016 = 323998^2 + 312004^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202321199968 and 202321200004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202321200023) by changing a digit.

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, 297530837 + ... + 297531516.

It is an arithmetic number, because the mean of its divisors is an integer number (18744464151).

Almost surely, 2^202321200020 is an apocalyptic number.

202321200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202321200020 is an abundant number, since it is smaller than the sum of its proper divisors (247545939604).

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

202321200020 is a wasteful number, since it uses less digits than its factorization.

202321200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595062379 (or 595062377 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 202321200020 its reverse (20002123202), we get a palindrome (222323323222).

The spelling of 202321200020 in words is "two hundred two billion, three hundred twenty-one million, two hundred thousand, twenty".