12321126 has 32 divisors (see below), whose sum is σ = 27496800. Its totient is φ = 4089600.

The previous prime is 12321121. The next prime is 12321131. The reversal of 12321126 is 62112321.

It is an interprime number because it is at equal distance from previous prime (12321121) and next prime (12321131).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 12321099 and 12321108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21370 + ... + 21938.

It is an arithmetic number, because the mean of its divisors is an integer number (859275).

Almost surely, 2^12321126 is an apocalyptic number.

12321126 is an abundant number, since it is smaller than the sum of its proper divisors (15175674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12321126 is a wasteful number, since it uses less digits than its factorization.

12321126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981 (or 975 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 12321126 is about 3510.1461508034. The cubic root of 12321126 is about 230.9671061275.

Adding to 12321126 its reverse (62112321), we get a palindrome (74433447).

The spelling of 12321126 in words is "twelve million, three hundred twenty-one thousand, one hundred twenty-six".