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12030221 = 710915767
BaseRepresentation
bin101101111001…
…000100001101
3211122012100202
4231321010031
511034431341
61105503245
7204153350
oct55710415
924565322
1012030221
116877535
124041b25
132652998
141852297
1510c979b
hexb7910d

12030221 has 8 divisors (see below), whose sum is σ = 13875840. Its totient is φ = 10216368.

The previous prime is 12030209. The next prime is 12030223. The reversal of 12030221 is 12203021.

It is a happy number.

12030221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12030221 - 222 = 7835917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12030223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7121 + ... + 8646.

It is an arithmetic number, because the mean of its divisors is an integer number (1734480).

Almost surely, 212030221 is an apocalyptic number.

It is an amenable number.

12030221 is a deficient number, since it is larger than the sum of its proper divisors (1845619).

12030221 is a wasteful number, since it uses less digits than its factorization.

12030221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15883.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 12030221 is about 3468.4608978623. The cubic root of 12030221 is about 229.1348785587.

Adding to 12030221 its reverse (12203021), we get a palindrome (24233242).

The spelling of 12030221 in words is "twelve million, thirty thousand, two hundred twenty-one".

Divisors: 1 7 109 763 15767 110369 1718603 12030221