120220221 has 16 divisors (see below), whose sum is σ = 176834880. Its totient is φ = 72040320.

The previous prime is 120220213. The next prime is 120220223. The reversal of 120220221 is 122022021.

It is not a de Polignac number, because 120220221 - 2³ = 120220213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120220197 and 120220206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120220223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17530 + ... + 23403.

It is an arithmetic number, because the mean of its divisors is an integer number (11052180).

Almost surely, 2^120220221 is an apocalyptic number.

120220221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120220221 is a deficient number, since it is larger than the sum of its proper divisors (56614659).

120220221 is a wasteful number, since it uses less digits than its factorization.

120220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41036.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 120220221 is about 10964.4982101326. The cubic root of 120220221 is about 493.5439591953.

Adding to 120220221 its reverse (122022021), we get a palindrome (242242242).

The spelling of 120220221 in words is "one hundred twenty million, two hundred twenty thousand, two hundred twenty-one".