120804221 has 2 divisors, whose sum is σ = 120804222. Its totient is φ = 120804220.

The previous prime is 120804191. The next prime is 120804247. The reversal of 120804221 is 122408021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116748025 + 4056196 = 10805^2 + 2014^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120804221 is a prime.

It is a super-2 number, since 2×120804221² = 29187319622833682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120804193 and 120804202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120804251) 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 as a sum of consecutive naturals, namely, 60402110 + 60402111.

It is an arithmetic number, because the mean of its divisors is an integer number (60402111).

Almost surely, 2^120804221 is an apocalyptic number.

It is an amenable number.

120804221 is a deficient number, since it is larger than the sum of its proper divisors (1).

120804221 is an equidigital number, since it uses as much as digits as its factorization.

120804221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 120804221 is about 10991.0973519481. The cubic root of 120804221 is about 494.3418399766.

The spelling of 120804221 in words is "one hundred twenty million, eight hundred four thousand, two hundred twenty-one".