120216021 has 8 divisors (see below), whose sum is σ = 168724320. Its totient is φ = 75925872.

The previous prime is 120216017. The next prime is 120216029. The reversal of 120216021 is 120612021.

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

It is not a de Polignac number, because 120216021 - 2² = 120216017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120216029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1054470 + ... + 1054583.

It is an arithmetic number, because the mean of its divisors is an integer number (21090540).

Almost surely, 2^120216021 is an apocalyptic number.

It is an amenable number.

120216021 is a deficient number, since it is larger than the sum of its proper divisors (48508299).

120216021 is a wasteful number, since it uses less digits than its factorization.

120216021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2109075.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 120216021 is about 10964.3066812270. The cubic root of 120216021 is about 493.5382116631.

Adding to 120216021 its reverse (120612021), we get a palindrome (240828042).

The spelling of 120216021 in words is "one hundred twenty million, two hundred sixteen thousand, twenty-one".