20043404212 has 12 divisors (see below), whose sum is σ = 37774108036. Its totient is φ = 9250801920.

The previous prime is 20043404191. The next prime is 20043404219. The reversal of 20043404212 is 21240434002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3596880676 + 16446523536 = 59974^2 + 128244^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043404219) 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 3 ways as a sum of consecutive naturals, for example, 192724989 + ... + 192725092.

Almost surely, 2^20043404212 is an apocalyptic number.

It is an amenable number.

20043404212 is a deficient number, since it is larger than the sum of its proper divisors (17730703824).

20043404212 is a wasteful number, since it uses less digits than its factorization.

20043404212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385450098 (or 385450096 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20043404212 its reverse (21240434002), we get a palindrome (41283838214).

The spelling of 20043404212 in words is "twenty billion, forty-three million, four hundred four thousand, two hundred twelve".