12205670 has 16 divisors (see below), whose sum is σ = 22012560. Its totient is φ = 4872864.

The previous prime is 12205649. The next prime is 12205691. The reversal of 12205670 is 7650221.

It is an interprime number because it is at equal distance from previous prime (12205649) and next prime (12205691).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6941 + ... + 8519.

It is an arithmetic number, because the mean of its divisors is an integer number (1375785).

Almost surely, 2^12205670 is an apocalyptic number.

12205670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12205670 is a deficient number, since it is larger than the sum of its proper divisors (9806890).

12205670 is a wasteful number, since it uses less digits than its factorization.

12205670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 12205670 is about 3493.6614031700. The cubic root of 12205670 is about 230.2434096049.

Adding to 12205670 its reverse (7650221), we get a palindrome (19855891).

The spelling of 12205670 in words is "twelve million, two hundred five thousand, six hundred seventy".