20004211 has 2 divisors, whose sum is σ = 20004212. Its totient is φ = 20004210.

The previous prime is 20004199. The next prime is 20004217. The reversal of 20004211 is 11240002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20004211 - 2⁹ = 20003699 is a prime.

It is not a weakly prime, because it can be changed into another prime (20004217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002105 + 10002106.

It is an arithmetic number, because the mean of its divisors is an integer number (10002106).

Almost surely, 2^20004211 is an apocalyptic number.

20004211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004211 is an equidigital number, since it uses as much as digits as its factorization.

20004211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 20004211 is about 4472.6067343329. The cubic root of 20004211 is about 271.4608110102.

Adding to 20004211 its reverse (11240002), we get a palindrome (31244213).

The spelling of 20004211 in words is "twenty million, four thousand, two hundred eleven".