12261282 has 32 divisors (see below), whose sum is σ = 27480384. Its totient is φ = 3614400.

The previous prime is 12261281. The next prime is 12261283. The reversal of 12261282 is 28216221.

Added to its reverse (28216221) it gives a triangular number (40477503 = T₈₉₉₇).

It is an interprime number because it is at equal distance from previous prime (12261281) and next prime (12261283).

It is not an unprimeable number, because it can be changed into a prime (12261281) 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 15 ways as a sum of consecutive naturals, for example, 69 + ... + 4952.

It is an arithmetic number, because the mean of its divisors is an integer number (858762).

Almost surely, 2^12261282 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12261282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13740192).

12261282 is an abundant number, since it is smaller than the sum of its proper divisors (15219102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12261282 is a wasteful number, since it uses less digits than its factorization.

12261282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5074.

The product of its digits is 768, while the sum is 24.

The square root of 12261282 is about 3501.6113433675. The cubic root of 12261282 is about 230.5925615175.

Adding to 12261282 its reverse (28216221), we get a triangular number (40477503 = T₈₉₉₇).

The spelling of 12261282 in words is "twelve million, two hundred sixty-one thousand, two hundred eighty-two".