2211666223115 has 32 divisors (see below), whose sum is σ = 2777120764416. Its totient is φ = 1687684134400.

The previous prime is 2211666223111. The next prime is 2211666223127. The reversal of 2211666223115 is 5113226661122.

It is not a de Polignac number, because 2211666223115 - 2² = 2211666223111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211666223111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252844172 + ... + 252852918.

It is an arithmetic number, because the mean of its divisors is an integer number (86785023888).

Almost surely, 2^{2211666223115} is an apocalyptic number.

2211666223115 is a deficient number, since it is larger than the sum of its proper divisors (565454541301).

2211666223115 is a wasteful number, since it uses less digits than its factorization.

2211666223115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14659.

The product of its digits is 51840, while the sum is 38.

The spelling of 2211666223115 in words is "two trillion, two hundred eleven billion, six hundred sixty-six million, two hundred twenty-three thousand, one hundred fifteen".