20041205211 has 12 divisors (see below), whose sum is σ = 29246845992. Its totient is φ = 13223062656.

The previous prime is 20041205201. The next prime is 20041205237. The reversal of 20041205211 is 11250214002.

20041205211 is a `hidden beast` number, since 20 + 0 + 4 + 120 + 521 + 1 = 666.

It is not a de Polignac number, because 20041205211 - 2⁹ = 20041204699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20041205201) 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 11 ways as a sum of consecutive naturals, for example, 11477481 + ... + 11479226.

It is an arithmetic number, because the mean of its divisors is an integer number (2437237166).

Almost surely, 2^20041205211 is an apocalyptic number.

20041205211 is a deficient number, since it is larger than the sum of its proper divisors (9205640781).

20041205211 is a wasteful number, since it uses less digits than its factorization.

20041205211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22956810 (or 22956807 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 20041205211 its reverse (11250214002), we get a palindrome (31291419213).

The spelling of 20041205211 in words is "twenty billion, forty-one million, two hundred five thousand, two hundred eleven".