12226281 has 8 divisors (see below), whose sum is σ = 17260704. Its totient is φ = 7671360.

The previous prime is 12226273. The next prime is 12226289. The reversal of 12226281 is 18262221.

It is an interprime number because it is at equal distance from previous prime (12226273) and next prime (12226289).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12226281 - 2³ = 12226273 is a prime.

It is a super-2 number, since 2×12226281² = 298963894181922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12226289) 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, 119815 + ... + 119916.

It is an arithmetic number, because the mean of its divisors is an integer number (2157588).

Almost surely, 2^12226281 is an apocalyptic number.

It is an amenable number.

12226281 is a deficient number, since it is larger than the sum of its proper divisors (5034423).

12226281 is a wasteful number, since it uses less digits than its factorization.

12226281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239751.

The product of its digits is 768, while the sum is 24.

The square root of 12226281 is about 3496.6099296318. The cubic root of 12226281 is about 230.3729362441.

It can be divided in two parts, 1222 and 6281, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 12226281 in words is "twelve million, two hundred twenty-six thousand, two hundred eighty-one".