12106945 has 4 divisors (see below), whose sum is σ = 14528340. Its totient is φ = 9685552.

The previous prime is 12106921. The next prime is 12106973. The reversal of 12106945 is 54960121.

12106945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54960121 = 5351 ⋅10271.

It can be written as a sum of positive squares in 2 ways, for example, as 9314704 + 2792241 = 3052^2 + 1671^2 .

It is a cyclic number.

It is not a de Polignac number, because 12106945 - 2⁷ = 12106817 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1210690 + ... + 1210699.

It is an arithmetic number, because the mean of its divisors is an integer number (3632085).

Almost surely, 2^12106945 is an apocalyptic number.

It is an amenable number.

12106945 is a deficient number, since it is larger than the sum of its proper divisors (2421395).

12106945 is an equidigital number, since it uses as much as digits as its factorization.

12106945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421394.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 12106945 is about 3479.5035565437. The cubic root of 12106945 is about 229.6209572768.

The spelling of 12106945 in words is "twelve million, one hundred six thousand, nine hundred forty-five".