12133261 has 8 divisors (see below), whose sum is σ = 14062464. Its totient is φ = 10253040.

The previous prime is 12133243. The next prime is 12133271. The reversal of 12133261 is 16233121.

12133261 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 not a de Polignac number, because 12133261 - 2¹⁷ = 12002189 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 (12133241) 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, 11710 + ... + 12703.

It is an arithmetic number, because the mean of its divisors is an integer number (1757808).

Almost surely, 2^12133261 is an apocalyptic number.

It is an amenable number.

12133261 is a deficient number, since it is larger than the sum of its proper divisors (1929203).

12133261 is an equidigital number, since it uses as much as digits as its factorization.

12133261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24491.

The product of its digits is 216, while the sum is 19.

The square root of 12133261 is about 3483.2830777874. The cubic root of 12133261 is about 229.7872070943.

Adding to 12133261 its reverse (16233121), we get a palindrome (28366382).

It can be divided in two parts, 1213 and 3261, that multiplied together give a palindrome (3955593).

The spelling of 12133261 in words is "twelve million, one hundred thirty-three thousand, two hundred sixty-one".