20203222320 has 240 divisors, whose sum is σ = 69800657472. Its totient is φ = 5233704960.

The previous prime is 20203222313. The next prime is 20203222321. The reversal of 20203222320 is 2322230202.

20203222320 is a `hidden beast` number, since 2 + 0 + 20 + 322 + 2 + 320 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×20203222320² (a number of 21 digits) contains 22 as substring.

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 = 20203222293 and 20203222302.

It is not an unprimeable number, because it can be changed into a prime (20203222321) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7585309 + ... + 7587971.

Almost surely, 2^20203222320 is an apocalyptic number.

20203222320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20203222320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34900328736).

20203222320 is an abundant number, since it is smaller than the sum of its proper divisors (49597435152).

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

20203222320 is a wasteful number, since it uses less digits than its factorization.

20203222320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2980 (or 2971 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

Adding to 20203222320 its reverse (2322230202), we get a palindrome (22525452522).

The spelling of 20203222320 in words is "twenty billion, two hundred three million, two hundred twenty-two thousand, three hundred twenty".