203122201320 has 96 divisors (see below), whose sum is σ = 662716122120. Its totient is φ = 53955133440.

The previous prime is 203122201307. The next prime is 203122201343. The reversal of 203122201320 is 23102221302.

203122201320 is a `hidden beast` number, since 2 + 0 + 312 + 220 + 132 + 0 = 666.

203122201320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 194179472964 + 8942728356 = 440658^2 + 94566^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 203122201293 and 203122201302.

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 23 ways as a sum of consecutive naturals, for example, 1005201 + ... + 1190240.

Almost surely, 2^203122201320 is an apocalyptic number.

203122201320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203122201320 is an abundant number, since it is smaller than the sum of its proper divisors (459593920800).

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

203122201320 is a wasteful number, since it uses less digits than its factorization.

203122201320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195715 (or 2195708 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 203122201320 its reverse (23102221302), we get a palindrome (226224422622).

The spelling of 203122201320 in words is "two hundred three billion, one hundred twenty-two million, two hundred one thousand, three hundred twenty".