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12225133 = 37330409
BaseRepresentation
bin101110101000…
…101001101101
3212000002201201
4232220221231
511112201013
61114005501
7205624534
oct56505155
925002651
1012225133
11699aa18
124116891
1326c060b
1418a331b
1511173dd
hexba8a6d

12225133 has 4 divisors (see below), whose sum is σ = 12555580. Its totient is φ = 11894688.

The previous prime is 12225107. The next prime is 12225149. The reversal of 12225133 is 33152221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9259849 + 2965284 = 3043^2 + 1722^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12225133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12225133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12025133) 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 3 ways as a sum of consecutive naturals, for example, 165168 + ... + 165241.

It is an arithmetic number, because the mean of its divisors is an integer number (3138895).

Almost surely, 212225133 is an apocalyptic number.

It is an amenable number.

12225133 is a deficient number, since it is larger than the sum of its proper divisors (330447).

12225133 is an equidigital number, since it uses as much as digits as its factorization.

12225133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330446.

The product of its digits is 360, while the sum is 19.

The square root of 12225133 is about 3496.4457667752. The cubic root of 12225133 is about 230.3657256456.

Adding to 12225133 its reverse (33152221), we get a palindrome (45377354).

The spelling of 12225133 in words is "twelve million, two hundred twenty-five thousand, one hundred thirty-three".

Divisors: 1 37 330409 12225133