120216866 has 64 divisors (see below), whose sum is σ = 232657920. Its totient is φ = 45240000.

The previous prime is 120216841. The next prime is 120216871. The reversal of 120216866 is 668612021.

It is a Smith number, since the sum of its digits (32) 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 (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 917621 + ... + 917751.

It is an arithmetic number, because the mean of its divisors is an integer number (3635280).

Almost surely, 2^120216866 is an apocalyptic number.

120216866 is a deficient number, since it is larger than the sum of its proper divisors (112441054).

120216866 is a wasteful number, since it uses less digits than its factorization.

120216866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 120216866 is about 10964.3452152876. The cubic root of 120216866 is about 493.5393680226.

Adding to 120216866 its reverse (668612021), we get a palindrome (788828887).

The spelling of 120216866 in words is "one hundred twenty million, two hundred sixteen thousand, eight hundred sixty-six".