12232261 has 4 divisors (see below), whose sum is σ = 12239500. Its totient is φ = 12225024.

The previous prime is 12232247. The next prime is 12232271. The reversal of 12232261 is 16223221.

12232261 is digitally balanced in base 2, 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 can be written as a sum of positive squares in 2 ways, for example, as 4024036 + 8208225 = 2006^2 + 2865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12232261 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 (12232201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415 + ... + 4963.

It is an arithmetic number, because the mean of its divisors is an integer number (3059875).

Almost surely, 2^12232261 is an apocalyptic number.

It is an amenable number.

12232261 is a deficient number, since it is larger than the sum of its proper divisors (7239).

12232261 is an equidigital number, since it uses as much as digits as its factorization.

12232261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7238.

The product of its digits is 288, while the sum is 19.

The square root of 12232261 is about 3497.4649390666. The cubic root of 12232261 is about 230.4104893811.

Adding to 12232261 its reverse (16223221), we get a palindrome (28455482).

The spelling of 12232261 in words is "twelve million, two hundred thirty-two thousand, two hundred sixty-one".