12302261 has 4 divisors (see below), whose sum is σ = 12312300. Its totient is φ = 12292224.

The previous prime is 12302249. The next prime is 12302273. The reversal of 12302261 is 16220321.

12302261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (12302249) and next prime (12302273).

It can be written as a sum of positive squares in 2 ways, for example, as 1739761 + 10562500 = 1319^2 + 3250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12302261 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 (12302221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2876 + ... + 5733.

It is an arithmetic number, because the mean of its divisors is an integer number (3078075).

Almost surely, 2^12302261 is an apocalyptic number.

It is an amenable number.

12302261 is a deficient number, since it is larger than the sum of its proper divisors (10039).

12302261 is an equidigital number, since it uses as much as digits as its factorization.

12302261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10038.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 12302261 is about 3507.4579113654. The cubic root of 12302261 is about 230.8491672277.

Adding to 12302261 its reverse (16220321), we get a palindrome (28522582).

The spelling of 12302261 in words is "twelve million, three hundred two thousand, two hundred sixty-one".