120408221 has 2 divisors, whose sum is σ = 120408222. Its totient is φ = 120408220.

The previous prime is 120408217. The next prime is 120408251. The reversal of 120408221 is 122804021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88924900 + 31483321 = 9430^2 + 5611^2 .

It is a cyclic number.

It is not a de Polignac number, because 120408221 - 2² = 120408217 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 120408193 and 120408202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120408251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60204110 + 60204111.

It is an arithmetic number, because the mean of its divisors is an integer number (60204111).

Almost surely, 2^120408221 is an apocalyptic number.

It is an amenable number.

120408221 is a deficient number, since it is larger than the sum of its proper divisors (1).

120408221 is an equidigital number, since it uses as much as digits as its factorization.

120408221 is an evil number, because the sum of its binary digits is even.

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

The square root of 120408221 is about 10973.0679848436. The cubic root of 120408221 is about 493.8010926992.

The spelling of 120408221 in words is "one hundred twenty million, four hundred eight thousand, two hundred twenty-one".