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4011221 is a prime number
BaseRepresentation
bin1111010011010011010101
321112210100202
433103103111
52011324341
6221550245
746044344
oct17232325
97483322
104011221
11229a765
121415385
13aa5a06
14765b5b
1554379b
hex3d34d5

4011221 has 2 divisors, whose sum is σ = 4011222. Its totient is φ = 4011220.

The previous prime is 4011209. The next prime is 4011239. The reversal of 4011221 is 1221104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3880900 + 130321 = 1970^2 + 361^2 .

It is a cyclic number.

It is not a de Polignac number, because 4011221 - 26 = 4011157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4010221) 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, 2005610 + 2005611.

It is an arithmetic number, because the mean of its divisors is an integer number (2005611).

Almost surely, 24011221 is an apocalyptic number.

It is an amenable number.

4011221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4011221 is an equidigital number, since it uses as much as digits as its factorization.

4011221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 4011221 is about 2002.8032853977. The cubic root of 4011221 is about 158.8884018401. Note that the first 3 decimals are identical.

Adding to 4011221 its reverse (1221104), we get a palindrome (5232325).

The spelling of 4011221 in words is "four million, eleven thousand, two hundred twenty-one".