20004101211 has 4 divisors (see below), whose sum is σ = 26672134952. Its totient is φ = 13336067472.

The previous prime is 20004101207. The next prime is 20004101233. The reversal of 20004101211 is 11210140002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20004101211 - 2² = 20004101207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20004101261) 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, 3334016866 + ... + 3334016871.

It is an arithmetic number, because the mean of its divisors is an integer number (6668033738).

Almost surely, 2^20004101211 is an apocalyptic number.

20004101211 is a deficient number, since it is larger than the sum of its proper divisors (6668033741).

20004101211 is an equidigital number, since it uses as much as digits as its factorization.

20004101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6668033740.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20004101211 its reverse (11210140002), we get a palindrome (31214241213).

The spelling of 20004101211 in words is "twenty billion, four million, one hundred one thousand, two hundred eleven".