20204313211 has 2 divisors, whose sum is σ = 20204313212. Its totient is φ = 20204313210.

The previous prime is 20204313197. The next prime is 20204313247. The reversal of 20204313211 is 11231340202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20204313211 - 2⁵ = 20204313179 is a prime.

It is not a weakly prime, because it can be changed into another prime (20204313281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10102156605 + 10102156606.

It is an arithmetic number, because the mean of its divisors is an integer number (10102156606).

Almost surely, 2^20204313211 is an apocalyptic number.

20204313211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20204313211 is an equidigital number, since it uses as much as digits as its factorization.

20204313211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20204313211 its reverse (11231340202), we get a palindrome (31435653413).

The spelling of 20204313211 in words is "twenty billion, two hundred four million, three hundred thirteen thousand, two hundred eleven".