12020040445 has 16 divisors (see below), whose sum is σ = 16501443840. Its totient is φ = 8233905024.

The previous prime is 12020040443. The next prime is 12020040457. The reversal of 12020040445 is 54404002021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12020040445 - 2¹ = 12020040443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020040443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140280 + ... + 209089.

It is an arithmetic number, because the mean of its divisors is an integer number (1031340240).

Almost surely, 2^12020040445 is an apocalyptic number.

It is an amenable number.

12020040445 is a deficient number, since it is larger than the sum of its proper divisors (4481403395).

12020040445 is an equidigital number, since it uses as much as digits as its factorization.

12020040445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350364.

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 12020040445 its reverse (54404002021), we get a palindrome (66424042466).

The spelling of 12020040445 in words is "twelve billion, twenty million, forty thousand, four hundred forty-five".