2211106661266 has 4 divisors (see below), whose sum is σ = 3316659991902. Its totient is φ = 1105553330632.

The previous prime is 2211106661227. The next prime is 2211106661287. The reversal of 2211106661266 is 6621666011122.

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

It can be written as a sum of positive squares in only one way, i.e., 2192262235641 + 18844425625 = 1480629^2 + 137275^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552776665315 + ... + 552776665318.

Almost surely, 2^{2211106661266} is an apocalyptic number.

2211106661266 is a deficient number, since it is larger than the sum of its proper divisors (1105553330636).

2211106661266 is a wasteful number, since it uses less digits than its factorization.

2211106661266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105553330635.

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 2211106661266 in words is "two trillion, two hundred eleven billion, one hundred six million, six hundred sixty-one thousand, two hundred sixty-six".