20023404212 has 12 divisors (see below), whose sum is σ = 40046808480. Its totient is φ = 8581458936.

The previous prime is 20023404157. The next prime is 20023404251. The reversal of 20023404212 is 21240432002.

20023404212 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 357560762 + ... + 357560817.

It is an arithmetic number, because the mean of its divisors is an integer number (3337234040).

Almost surely, 2^20023404212 is an apocalyptic number.

It is an amenable number.

20023404212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20023404212 is a wasteful number, since it uses less digits than its factorization.

20023404212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715121590 (or 715121588 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20023404212 its reverse (21240432002), we get a palindrome (41263836214).

The spelling of 20023404212 in words is "twenty billion, twenty-three million, four hundred four thousand, two hundred twelve".