120221305 has 4 divisors (see below), whose sum is σ = 144265572. Its totient is φ = 96177040.

The previous prime is 120221293. The next prime is 120221323. The reversal of 120221305 is 503122021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503122021 = 17 ⋅29595413.

It can be written as a sum of positive squares in 2 ways, for example, as 89927289 + 30294016 = 9483^2 + 5504^2 .

It is not a de Polignac number, because 120221305 - 2¹⁷ = 120090233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12022126 + ... + 12022135.

It is an arithmetic number, because the mean of its divisors is an integer number (36066393).

Almost surely, 2^120221305 is an apocalyptic number.

It is an amenable number.

120221305 is a deficient number, since it is larger than the sum of its proper divisors (24044267).

120221305 is an equidigital number, since it uses as much as digits as its factorization.

120221305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24044266.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 120221305 is about 10964.5476422878. The cubic root of 120221305 is about 493.5454425842.

Adding to 120221305 its reverse (503122021), we get a palindrome (623343326).

The spelling of 120221305 in words is "one hundred twenty million, two hundred twenty-one thousand, three hundred five".