20212033320 has 96 divisors (see below), whose sum is σ = 65884426920. Its totient is φ = 5373849600.

The previous prime is 20212033223. The next prime is 20212033321. The reversal of 20212033320 is 2333021202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14430255876 + 5781777444 = 120126^2 + 76038^2 .

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 = 20212033293 and 20212033302.

It is not an unprimeable number, because it can be changed into a prime (20212033321) 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 23 ways as a sum of consecutive naturals, for example, 38020 + ... + 204620.

Almost surely, 2^20212033320 is an apocalyptic number.

20212033320 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 20212033320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32942213460).

20212033320 is an abundant number, since it is smaller than the sum of its proper divisors (45672393600).

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

20212033320 is a wasteful number, since it uses less digits than its factorization.

20212033320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166955 (or 166948 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20212033320 its reverse (2333021202), we get a palindrome (22545054522).

The spelling of 20212033320 in words is "twenty billion, two hundred twelve million, thirty-three thousand, three hundred twenty".