12271233 has 16 divisors (see below), whose sum is σ = 17922240. Its totient is φ = 7422144.

The previous prime is 12271219. The next prime is 12271247. The reversal of 12271233 is 33217221.

It is an interprime number because it is at equal distance from previous prime (12271219) and next prime (12271247).

It is not a de Polignac number, because 12271233 - 2⁵ = 12271201 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12271333) 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 15 ways as a sum of consecutive naturals, for example, 366 + ... + 4967.

It is an arithmetic number, because the mean of its divisors is an integer number (1120140).

Almost surely, 2^12271233 is an apocalyptic number.

12271233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12271233 is a deficient number, since it is larger than the sum of its proper divisors (5651007).

12271233 is a wasteful number, since it uses less digits than its factorization.

12271233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5408.

The product of its digits is 504, while the sum is 21.

The square root of 12271233 is about 3503.0319724490. The cubic root of 12271233 is about 230.6549260158.

Adding to 12271233 its reverse (33217221), we get a palindrome (45488454).

The spelling of 12271233 in words is "twelve million, two hundred seventy-one thousand, two hundred thirty-three".