120216105 has 24 divisors (see below), whose sum is σ = 210330432. Its totient is φ = 63513504.

The previous prime is 120216091. The next prime is 120216113. The reversal of 120216105 is 501612021.

It is not a de Polignac number, because 120216105 - 2¹¹ = 120214057 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 7669 + ... + 17298.

It is an arithmetic number, because the mean of its divisors is an integer number (8763768).

Almost surely, 2^120216105 is an apocalyptic number.

120216105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120216105 is a deficient number, since it is larger than the sum of its proper divisors (90114327).

120216105 is a wasteful number, since it uses less digits than its factorization.

120216105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25085 (or 25082 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 120216105 is about 10964.3105118379. The cubic root of 120216105 is about 493.5383266151.

Adding to 120216105 its reverse (501612021), we get a palindrome (621828126).

It can be divided in two parts, 120 and 216105, that added together give a square (216225 = 465²).

The spelling of 120216105 in words is "one hundred twenty million, two hundred sixteen thousand, one hundred five".