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12110221 is a prime number
BaseRepresentation
bin101110001100…
…100110001101
3211210021002201
4232030212031
511100011341
61111321501
7204635524
oct56144615
924707081
1012110221
116921652
124080291
132680216
1418734bb
1510e3331
hexb8c98d

12110221 has 2 divisors, whose sum is σ = 12110222. Its totient is φ = 12110220.

The previous prime is 12110209. The next prime is 12110233. The reversal of 12110221 is 12201121.

12110221 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (12110209) and next prime (12110233).

It can be written as a sum of positive squares in only one way, i.e., 12075625 + 34596 = 3475^2 + 186^2 .

It is a cyclic number.

It is not a de Polignac number, because 12110221 - 213 = 12102029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12110198 and 12110207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12110251) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055110 + 6055111.

It is an arithmetic number, because the mean of its divisors is an integer number (6055111).

Almost surely, 212110221 is an apocalyptic number.

It is an amenable number.

12110221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12110221 is an equidigital number, since it uses as much as digits as its factorization.

12110221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 12110221 is about 3479.9742815142. The cubic root of 12110221 is about 229.6416663386.

Adding to 12110221 its reverse (12201121), we get a palindrome (24311342).

The spelling of 12110221 in words is "twelve million, one hundred ten thousand, two hundred twenty-one".