1021110666 has 16 divisors (see below), whose sum is σ = 2043806688. Its totient is φ = 340106000.

The previous prime is 1021110613. The next prime is 1021110679. The reversal of 1021110666 is 6660111201.

It is a Smith number, since the sum of its digits (24) 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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57600 + ... + 73211.

It is an arithmetic number, because the mean of its divisors is an integer number (127737918).

Almost surely, 2^1021110666 is an apocalyptic number.

1021110666 is an abundant number, since it is smaller than the sum of its proper divisors (1022696022).

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

1021110666 is a wasteful number, since it uses less digits than its factorization.

1021110666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132117.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1021110666 is about 31954.8222651918. The cubic root of 1021110666 is about 1006.9879435678.

Adding to 1021110666 its reverse (6660111201), we get a palindrome (7681221867).

The spelling of 1021110666 in words is "one billion, twenty-one million, one hundred ten thousand, six hundred sixty-six".