120031221 has 8 divisors (see below), whose sum is σ = 160501600. Its totient is φ = 79790832.

The previous prime is 120031213. The next prime is 120031229. The reversal of 120031221 is 122130021.

It is an interprime number because it is at equal distance from previous prime (120031213) and next prime (120031229).

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

It is not a de Polignac number, because 120031221 - 2³ = 120031213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120031197 and 120031206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120031229) by changing a digit.

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, 56275 + ... + 58368.

It is an arithmetic number, because the mean of its divisors is an integer number (20062700).

Almost surely, 2^120031221 is an apocalyptic number.

It is an amenable number.

120031221 is a deficient number, since it is larger than the sum of its proper divisors (40470379).

120031221 is a wasteful number, since it uses less digits than its factorization.

120031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114995.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 120031221 is about 10955.8760945896. The cubic root of 120031221 is about 493.2851876053.

Adding to 120031221 its reverse (122130021), we get a palindrome (242161242).

The spelling of 120031221 in words is "one hundred twenty million, thirty-one thousand, two hundred twenty-one".