12102257 has 8 divisors (see below), whose sum is σ = 12610080. Its totient is φ = 11604640.

The previous prime is 12102241. The next prime is 12102263. The reversal of 12102257 is 75220121.

12102257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12102257 - 2⁴ = 12102241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12102287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83 + ... + 4920.

It is an arithmetic number, because the mean of its divisors is an integer number (1576260).

Almost surely, 2^12102257 is an apocalyptic number.

It is an amenable number.

12102257 is a deficient number, since it is larger than the sum of its proper divisors (507823).

12102257 is an equidigital number, since it uses as much as digits as its factorization.

12102257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5103.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 12102257 is about 3478.8298319981. The cubic root of 12102257 is about 229.5913158322.

Adding to 12102257 its reverse (75220121), we get a palindrome (87322378).

The spelling of 12102257 in words is "twelve million, one hundred two thousand, two hundred fifty-seven".