12250161 has 36 divisors (see below), whose sum is σ = 22241856. Its totient is φ = 6359760.

The previous prime is 12250097. The next prime is 12250163. The reversal of 12250161 is 16105221.

It is not a de Polignac number, because 12250161 - 2⁶ = 12250097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12250163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6820 + ... + 8426.

Almost surely, 2^12250161 is an apocalyptic number.

12250161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12250161 is a deficient number, since it is larger than the sum of its proper divisors (9991695).

12250161 is a wasteful number, since it uses less digits than its factorization.

12250161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642 (or 1628 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 12250161 is about 3500.0229999244. The cubic root of 12250161 is about 230.5228245036.

Adding to 12250161 its reverse (16105221), we get a palindrome (28355382).

The spelling of 12250161 in words is "twelve million, two hundred fifty thousand, one hundred sixty-one".