2122611315666 has 32 divisors (see below), whose sum is σ = 4263217816320. Its totient is φ = 704538231936.

The previous prime is 2122611315641. The next prime is 2122611315697. The reversal of 2122611315666 is 6665131162212.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40207360 + ... + 40260116.

It is an arithmetic number, because the mean of its divisors is an integer number (133225556760).

Almost surely, 2^{2122611315666} is an apocalyptic number.

2122611315666 is an abundant number, since it is smaller than the sum of its proper divisors (2140606500654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2122611315666 is a wasteful number, since it uses less digits than its factorization.

2122611315666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81058.

The product of its digits is 155520, while the sum is 42.

Adding to 2122611315666 its reverse (6665131162212), we get a palindrome (8787742477878).

The spelling of 2122611315666 in words is "two trillion, one hundred twenty-two billion, six hundred eleven million, three hundred fifteen thousand, six hundred sixty-six".