204410121211 has 2 divisors, whose sum is σ = 204410121212. Its totient is φ = 204410121210.

The previous prime is 204410121199. The next prime is 204410121229. The reversal of 204410121211 is 112121014402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204410121211 - 2¹¹ = 204410119163 is a prime.

It is not a weakly prime, because it can be changed into another prime (204410121511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102205060605 + 102205060606.

It is an arithmetic number, because the mean of its divisors is an integer number (102205060606).

Almost surely, 2^204410121211 is an apocalyptic number.

204410121211 is a deficient number, since it is larger than the sum of its proper divisors (1).

204410121211 is an equidigital number, since it uses as much as digits as its factorization.

204410121211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 204410121211 its reverse (112121014402), we get a palindrome (316531135613).

The spelling of 204410121211 in words is "two hundred four billion, four hundred ten million, one hundred twenty-one thousand, two hundred eleven".