12205957 has 2 divisors, whose sum is σ = 12205958. Its totient is φ = 12205956.

The previous prime is 12205933. The next prime is 12205981. The reversal of 12205957 is 75950221.

It is a balanced prime because it is at equal distance from previous prime (12205933) and next prime (12205981).

It can be written as a sum of positive squares in only one way, i.e., 8328996 + 3876961 = 2886^2 + 1969^2 .

It is an emirp because it is prime and its reverse (75950221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12205957 - 2⁷ = 12205829 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12205757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6102978 + 6102979.

It is an arithmetic number, because the mean of its divisors is an integer number (6102979).

Almost surely, 2^12205957 is an apocalyptic number.

It is an amenable number.

12205957 is a deficient number, since it is larger than the sum of its proper divisors (1).

12205957 is an equidigital number, since it uses as much as digits as its factorization.

12205957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 12205957 is about 3493.7024773154. The cubic root of 12205957 is about 230.2452142127.

The spelling of 12205957 in words is "twelve million, two hundred five thousand, nine hundred fifty-seven".