12266261 has 4 divisors (see below), whose sum is σ = 14018592. Its totient is φ = 10513932.

The previous prime is 12266249. The next prime is 12266269. The reversal of 12266261 is 16266221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12266261 - 2¹⁸ = 12004117 is a prime.

It is a super-2 number, since 2×12266261² = 300922317840242, which contains 22 as substring.

It is a Curzon number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 12266261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12266269) 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, 876155 + ... + 876168.

It is an arithmetic number, because the mean of its divisors is an integer number (3504648).

Almost surely, 2^12266261 is an apocalyptic number.

It is an amenable number.

12266261 is a deficient number, since it is larger than the sum of its proper divisors (1752331).

12266261 is an equidigital number, since it uses as much as digits as its factorization.

12266261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752330.

The product of its digits is 1728, while the sum is 26.

The square root of 12266261 is about 3502.3222296071. The cubic root of 12266261 is about 230.6237699178.

The spelling of 12266261 in words is "twelve million, two hundred sixty-six thousand, two hundred sixty-one".