20320033212 has 36 divisors (see below), whose sum is σ = 51383666880. Its totient is φ = 6770820672.

The previous prime is 20320033199. The next prime is 20320033213. The reversal of 20320033212 is 21233002302.

It is a happy number.

20320033212 is a `hidden beast` number, since 2 + 0 + 320 + 0 + 332 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320033213) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5913 + ... + 201680.

It is an arithmetic number, because the mean of its divisors is an integer number (1427324080).

Almost surely, 2^20320033212 is an apocalyptic number.

It is an amenable number.

20320033212 is an abundant number, since it is smaller than the sum of its proper divisors (31063633668).

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

20320033212 is a wasteful number, since it uses less digits than its factorization.

20320033212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210322 (or 210317 counting only the distinct ones).

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

Adding to 20320033212 its reverse (21233002302), we get a palindrome (41553035514).

The spelling of 20320033212 in words is "twenty billion, three hundred twenty million, thirty-three thousand, two hundred twelve".