12214261 has 4 divisors (see below), whose sum is σ = 12236224. Its totient is φ = 12192300.

The previous prime is 12214243. The next prime is 12214273. The reversal of 12214261 is 16241221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16241221 = 307 ⋅52903.

It is a cyclic number.

It is not a de Polignac number, because 12214261 - 2¹⁵ = 12181493 is a prime.

It is a super-2 number, since 2×12214261² = 298376343552242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12214361) 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, 10125 + ... + 11266.

It is an arithmetic number, because the mean of its divisors is an integer number (3059056).

Almost surely, 2^12214261 is an apocalyptic number.

It is an amenable number.

12214261 is a deficient number, since it is larger than the sum of its proper divisors (21963).

12214261 is an equidigital number, since it uses as much as digits as its factorization.

12214261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21962.

The product of its digits is 192, while the sum is 19.

The square root of 12214261 is about 3494.8906992923. The cubic root of 12214261 is about 230.2974161236.

Adding to 12214261 its reverse (16241221), we get a palindrome (28455482).

The spelling of 12214261 in words is "twelve million, two hundred fourteen thousand, two hundred sixty-one".