2111017666 has 8 divisors (see below), whose sum is σ = 3226272444. Its totient is φ = 1035593520.

The previous prime is 2111017631. The next prime is 2111017669. The reversal of 2111017666 is 6667101112.

It can be written as a sum of positive squares in 2 ways, for example, as 2058527641 + 52490025 = 45371^2 + 7245^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2111017669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9957525 + ... + 9957736.

Almost surely, 2^2111017666 is an apocalyptic number.

2111017666 is a deficient number, since it is larger than the sum of its proper divisors (1115254778).

2111017666 is a wasteful number, since it uses less digits than its factorization.

2111017666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19915316.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 2111017666 is about 45945.8122792491. The cubic root of 2111017666 is about 1282.8147825876.

Adding to 2111017666 its reverse (6667101112), we get a palindrome (8778118778).

The spelling of 2111017666 in words is "two billion, one hundred eleven million, seventeen thousand, six hundred sixty-six".