12023205 has 16 divisors (see below), whose sum is σ = 19293120. Its totient is φ = 6393728.

The previous prime is 12023191. The next prime is 12023239. The reversal of 12023205 is 50232021.

12023205 = 1092² + 1093² + ... + 1101².

It is a cyclic number.

It is not a de Polignac number, because 12023205 - 2⁴ = 12023189 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5329 + ... + 7241.

It is an arithmetic number, because the mean of its divisors is an integer number (1205820).

Almost surely, 2^12023205 is an apocalyptic number.

12023205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12023205 is a deficient number, since it is larger than the sum of its proper divisors (7269915).

12023205 is a wasteful number, since it uses less digits than its factorization.

12023205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340.

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

The square root of 12023205 is about 3467.4493507476. The cubic root of 12023205 is about 229.0903262342.

Adding to 12023205 its reverse (50232021), we get a palindrome (62255226).

The spelling of 12023205 in words is "twelve million, twenty-three thousand, two hundred five".