20320330212 has 144 divisors (see below), whose sum is σ = 63284737152. Its totient is φ = 5353620480.

The previous prime is 20320330207. The next prime is 20320330223. The reversal of 20320330212 is 21203302302.

It is a happy number.

20320330212 is a `hidden beast` number, since 2 + 0 + 320 + 330 + 2 + 12 = 666.

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

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 47 ways as a sum of consecutive naturals, for example, 3833548 + ... + 3838844.

Almost surely, 2^20320330212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20320330212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31642368576).

20320330212 is an abundant number, since it is smaller than the sum of its proper divisors (42964406940).

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

20320330212 is a wasteful number, since it uses less digits than its factorization.

20320330212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6498 (or 6493 counting only the distinct ones).

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

Adding to 20320330212 its reverse (21203302302), we get a palindrome (41523632514).

The spelling of 20320330212 in words is "twenty billion, three hundred twenty million, three hundred thirty thousand, two hundred twelve".