12302271 has 12 divisors (see below), whose sum is σ = 18815472. Its totient is φ = 7718976.

The previous prime is 12302249. The next prime is 12302273. The reversal of 12302271 is 17220321.

It is not a de Polignac number, because 12302271 - 2¹⁵ = 12269503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12302273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40051 + ... + 40356.

It is an arithmetic number, because the mean of its divisors is an integer number (1567956).

Almost surely, 2^12302271 is an apocalyptic number.

12302271 is a deficient number, since it is larger than the sum of its proper divisors (6513201).

12302271 is a wasteful number, since it uses less digits than its factorization.

12302271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80430 (or 80427 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 12302271 is about 3507.4593368990. The cubic root of 12302271 is about 230.8492297770.

Adding to 12302271 its reverse (17220321), we get a palindrome (29522592).

The spelling of 12302271 in words is "twelve million, three hundred two thousand, two hundred seventy-one".