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12114221 = 72247229
BaseRepresentation
bin101110001101…
…100100101101
3211210110120212
4232031210231
511100123341
61111352205
7204653300
oct56154455
924713525
1012114221
116924659
124082665
132681ca2
141874b37
1510e45eb
hexb8d92d

12114221 has 6 divisors (see below), whose sum is σ = 14092110. Its totient is φ = 10383576.

The previous prime is 12114197. The next prime is 12114227. The reversal of 12114221 is 12241121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7645225 + 4468996 = 2765^2 + 2114^2 .

It is not a de Polignac number, because 12114221 - 214 = 12097837 is a prime.

It is a super-3 number, since 3×121142213 (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12114196 and 12114205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12114227) 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 in 5 ways as a sum of consecutive naturals, for example, 123566 + ... + 123663.

It is an arithmetic number, because the mean of its divisors is an integer number (2348685).

Almost surely, 212114221 is an apocalyptic number.

It is an amenable number.

12114221 is a deficient number, since it is larger than the sum of its proper divisors (1977889).

12114221 is an equidigital number, since it uses as much as digits as its factorization.

12114221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247243 (or 247236 counting only the distinct ones).

The product of its digits is 32, while the sum is 14.

The square root of 12114221 is about 3480.5489509559. The cubic root of 12114221 is about 229.6669470649. Note that the first 3 decimals are identical.

Adding to 12114221 its reverse (12241121), we get a palindrome (24355342).

The spelling of 12114221 in words is "twelve million, one hundred fourteen thousand, two hundred twenty-one".

Divisors: 1 7 49 247229 1730603 12114221