120340221 has 8 divisors (see below), whose sum is σ = 160523520. Its totient is φ = 80191872.

The previous prime is 120340219. The next prime is 120340277. The reversal of 120340221 is 122043021.

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

It is not a de Polignac number, because 120340221 - 2¹ = 120340219 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 120340221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120340201) 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, 781 + ... + 15533.

It is an arithmetic number, because the mean of its divisors is an integer number (20065440).

Almost surely, 2^120340221 is an apocalyptic number.

It is an amenable number.

120340221 is a deficient number, since it is larger than the sum of its proper divisors (40183299).

120340221 is a wasteful number, since it uses less digits than its factorization.

120340221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17475.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 120340221 is about 10969.9690519162. The cubic root of 120340221 is about 493.7081178810.

Adding to 120340221 its reverse (122043021), we get a palindrome (242383242).

The spelling of 120340221 in words is "one hundred twenty million, three hundred forty thousand, two hundred twenty-one".