120620221 has 2 divisors, whose sum is σ = 120620222. Its totient is φ = 120620220.

The previous prime is 120620207. The next prime is 120620239. The reversal of 120620221 is 122026021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62647225 + 57972996 = 7915^2 + 7614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120620221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120620195 and 120620204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120620261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60310110 + 60310111.

It is an arithmetic number, because the mean of its divisors is an integer number (60310111).

Almost surely, 2^120620221 is an apocalyptic number.

It is an amenable number.

120620221 is a deficient number, since it is larger than the sum of its proper divisors (1).

120620221 is an equidigital number, since it uses as much as digits as its factorization.

120620221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 120620221 is about 10982.7237514198. The cubic root of 120620221 is about 494.0907308748.

Adding to 120620221 its reverse (122026021), we get a palindrome (242646242).

The spelling of 120620221 in words is "one hundred twenty million, six hundred twenty thousand, two hundred twenty-one".