12888217 has 2 divisors, whose sum is σ = 12888218. Its totient is φ = 12888216.

The previous prime is 12888203. The next prime is 12888241. The reversal of 12888217 is 71288821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11397376 + 1490841 = 3376^2 + 1221^2 .

It is a cyclic number.

It is not a de Polignac number, because 12888217 - 2¹¹ = 12886169 is a prime.

It is a super-2 number, since 2×12888217² = 332212274878178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12888277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6444108 + 6444109.

It is an arithmetic number, because the mean of its divisors is an integer number (6444109).

Almost surely, 2^12888217 is an apocalyptic number.

It is an amenable number.

12888217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12888217 is an equidigital number, since it uses as much as digits as its factorization.

12888217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14336, while the sum is 37.

The square root of 12888217 is about 3590.0162952276. The cubic root of 12888217 is about 234.4575810210.

The spelling of 12888217 in words is "twelve million, eight hundred eighty-eight thousand, two hundred seventeen".