2005566212211 has 4 divisors (see below), whose sum is σ = 2674088282952. Its totient is φ = 1337044141472.

The previous prime is 2005566212203. The next prime is 2005566212213. The reversal of 2005566212211 is 1122126655002.

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

It is a cyclic number.

It is not a de Polignac number, because 2005566212211 - 2³ = 2005566212203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2005566212213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334261035366 + ... + 334261035371.

It is an arithmetic number, because the mean of its divisors is an integer number (668522070738).

Almost surely, 2^{2005566212211} is an apocalyptic number.

2005566212211 is a deficient number, since it is larger than the sum of its proper divisors (668522070741).

2005566212211 is an equidigital number, since it uses as much as digits as its factorization.

2005566212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668522070740.

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 2005566212211 in words is "two trillion, five billion, five hundred sixty-six million, two hundred twelve thousand, two hundred eleven".