20043312012 has 36 divisors (see below), whose sum is σ = 52299397696. Its totient is φ = 6465584160.

The previous prime is 20043311963. The next prime is 20043312049. The reversal of 20043312012 is 21021334002.

20043312012 is a `hidden beast` number, since 200 + 433 + 1 + 20 + 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 an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 8978863 + ... + 8981094.

Almost surely, 2^20043312012 is an apocalyptic number.

It is an amenable number.

20043312012 is an abundant number, since it is smaller than the sum of its proper divisors (32256085684).

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

20043312012 is a wasteful number, since it uses less digits than its factorization.

20043312012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17959998 (or 17959993 counting only the distinct ones).

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

Adding to 20043312012 its reverse (21021334002), we get a palindrome (41064646014).

The spelling of 20043312012 in words is "twenty billion, forty-three million, three hundred twelve thousand, twelve".