12101445 has 12 divisors (see below), whose sum is σ = 20975916. Its totient is φ = 6454080.

The previous prime is 12101443. The next prime is 12101459. The reversal of 12101445 is 54410121.

12101445 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1855044 + 10246401 = 1362^2 + 3201^2 .

It is not a de Polignac number, because 12101445 - 2¹ = 12101443 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134416 + ... + 134505.

It is an arithmetic number, because the mean of its divisors is an integer number (1747993).

Almost surely, 2^12101445 is an apocalyptic number.

12101445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12101445 is a deficient number, since it is larger than the sum of its proper divisors (8874471).

12101445 is a wasteful number, since it uses less digits than its factorization.

12101445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268932 (or 268929 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 12101445 is about 3478.7131241308. The cubic root of 12101445 is about 229.5861809134.

Adding to 12101445 its reverse (54410121), we get a palindrome (66511566).

The spelling of 12101445 in words is "twelve million, one hundred one thousand, four hundred forty-five".