12321771 has 32 divisors (see below), whose sum is σ = 20998656. Its totient is φ = 6240000.

The previous prime is 12321763. The next prime is 12321797. The reversal of 12321771 is 17712321.

It is not a de Polignac number, because 12321771 - 2³ = 12321763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12321571) 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 31 ways as a sum of consecutive naturals, for example, 8821 + ... + 10121.

It is an arithmetic number, because the mean of its divisors is an integer number (656208).

Almost surely, 2^12321771 is an apocalyptic number.

12321771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12321771 is a deficient number, since it is larger than the sum of its proper divisors (8676885).

12321771 is a wasteful number, since it uses less digits than its factorization.

12321771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363.

The product of its digits is 588, while the sum is 24.

The square root of 12321771 is about 3510.2380261173. The cubic root of 12321771 is about 230.9711363648.

It can be divided in two parts, 1232 and 1771, that added together give a palindrome (3003).

The spelling of 12321771 in words is "twelve million, three hundred twenty-one thousand, seven hundred seventy-one".