12320205 has 16 divisors (see below), whose sum is σ = 19782144. Its totient is φ = 6547520.

The previous prime is 12320201. The next prime is 12320207. The reversal of 12320205 is 50202321.

It is not a de Polignac number, because 12320205 - 2² = 12320201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320201) 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, 3460 + ... + 6050.

It is an arithmetic number, because the mean of its divisors is an integer number (1236384).

Almost surely, 2^12320205 is an apocalyptic number.

12320205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12320205 is a deficient number, since it is larger than the sum of its proper divisors (7461939).

12320205 is a wasteful number, since it uses less digits than its factorization.

12320205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 12320205 is about 3510.0149572331. The cubic root of 12320205 is about 230.9613510797.

Adding to 12320205 its reverse (50202321), we get a palindrome (62522526).

The spelling of 12320205 in words is "twelve million, three hundred twenty thousand, two hundred five".