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120323221 is a prime number
BaseRepresentation
bin1110010101111…
…11110010010101
322101102001102121
413022333302111
5221300320341
615534535541
72660505364
oct712776225
9271361377
10120323221
1161a12687
12343675b1
131bc0b095
1411da17db
15a86b4d1
hex72bfc95

120323221 has 2 divisors, whose sum is σ = 120323222. Its totient is φ = 120323220.

The previous prime is 120323209. The next prime is 120323239. The reversal of 120323221 is 122323021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110019121 + 10304100 = 10489^2 + 3210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-120323221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120323195 and 120323204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120323201) 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, 60161610 + 60161611.

It is an arithmetic number, because the mean of its divisors is an integer number (60161611).

Almost surely, 2120323221 is an apocalyptic number.

It is an amenable number.

120323221 is a deficient number, since it is larger than the sum of its proper divisors (1).

120323221 is an equidigital number, since it uses as much as digits as its factorization.

120323221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 120323221 is about 10969.1941818896. The cubic root of 120323221 is about 493.6848687041.

Adding to 120323221 its reverse (122323021), we get a palindrome (242646242).

The spelling of 120323221 in words is "one hundred twenty million, three hundred twenty-three thousand, two hundred twenty-one".