204421310031611 has 2 divisors, whose sum is σ = 204421310031612. Its totient is φ = 204421310031610.

The previous prime is 204421310031541. The next prime is 204421310031623. The reversal of 204421310031611 is 116130013124402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204421310031611 - 2¹⁴ = 204421310015227 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (204421310031661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102210655015805 + 102210655015806.

It is an arithmetic number, because the mean of its divisors is an integer number (102210655015806).

Almost surely, 2^{204421310031611} is an apocalyptic number.

204421310031611 is a deficient number, since it is larger than the sum of its proper divisors (1).

204421310031611 is an equidigital number, since it uses as much as digits as its factorization.

204421310031611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 204421310031611 in words is "two hundred four trillion, four hundred twenty-one billion, three hundred ten million, thirty-one thousand, six hundred eleven".