12200257 has 4 divisors (see below), whose sum is σ = 12224196. Its totient is φ = 12176320.

The previous prime is 12200239. The next prime is 12200263. The reversal of 12200257 is 75200221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75200221 = 331 ⋅227191.

It can be written as a sum of positive squares in 2 ways, for example, as 4309776 + 7890481 = 2076^2 + 2809^2 .

It is a cyclic number.

It is not a de Polignac number, because 12200257 - 2⁷ = 12200129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12200297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11188 + ... + 12229.

It is an arithmetic number, because the mean of its divisors is an integer number (3056049).

Almost surely, 2^12200257 is an apocalyptic number.

It is an amenable number.

12200257 is a deficient number, since it is larger than the sum of its proper divisors (23939).

12200257 is an equidigital number, since it uses as much as digits as its factorization.

12200257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23938.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 12200257 is about 3492.8866285638. The cubic root of 12200257 is about 230.2093682711.

Adding to 12200257 its reverse (75200221), we get a palindrome (87400478).

The spelling of 12200257 in words is "twelve million, two hundred thousand, two hundred fifty-seven".