120221571 has 4 divisors (see below), whose sum is σ = 160295432. Its totient is φ = 80147712.

The previous prime is 120221567. The next prime is 120221581. The reversal of 120221571 is 175122021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 120221571 - 2² = 120221567 is a prime.

It is a super-2 number, since 2×120221571² = 28906452267416082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120221551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20036926 + ... + 20036931.

It is an arithmetic number, because the mean of its divisors is an integer number (40073858).

Almost surely, 2^120221571 is an apocalyptic number.

120221571 is a deficient number, since it is larger than the sum of its proper divisors (40073861).

120221571 is an equidigital number, since it uses as much as digits as its factorization.

120221571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40073860.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 120221571 is about 10964.5597722845. The cubic root of 120221571 is about 493.5458065879.

Adding to 120221571 its reverse (175122021), we get a palindrome (295343592).

The spelling of 120221571 in words is "one hundred twenty million, two hundred twenty-one thousand, five hundred seventy-one".