12325221 has 12 divisors (see below), whose sum is σ = 18850572. Its totient is φ = 7733376.

The previous prime is 12325211. The next prime is 12325231. The reversal of 12325221 is 12252321.

It is an interprime number because it is at equal distance from previous prime (12325211) and next prime (12325231).

It can be written as a sum of positive squares in 2 ways, for example, as 8381025 + 3944196 = 2895^2 + 1986^2 .

It is not a de Polignac number, because 12325221 - 2²¹ = 10228069 is a prime.

It is a super-2 number, since 2×12325221² = 303822145397682, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12325194 and 12325203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12325211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40126 + ... + 40431.

It is an arithmetic number, because the mean of its divisors is an integer number (1570881).

Almost surely, 2^12325221 is an apocalyptic number.

It is an amenable number.

12325221 is a deficient number, since it is larger than the sum of its proper divisors (6525351).

12325221 is a wasteful number, since it uses less digits than its factorization.

12325221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80580 (or 80577 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 12325221 is about 3510.7294113902. The cubic root of 12325221 is about 230.9926910601.

Adding to 12325221 its reverse (12252321), we get a palindrome (24577542).

Subtracting from 12325221 its reverse (12252321), we obtain a square (72900 = 270²).

The spelling of 12325221 in words is "twelve million, three hundred twenty-five thousand, two hundred twenty-one".