12020445430 has 32 divisors (see below), whose sum is σ = 24733440000. Its totient is φ = 4120351200.

The previous prime is 12020445407. The next prime is 12020445439. The reversal of 12020445430 is 3454402021.

It is a happy number.

It is a super-2 number, since 2×12020445430² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12020445395 and 12020445404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020445439) 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, 332755 + ... + 367105.

It is an arithmetic number, because the mean of its divisors is an integer number (772920000).

Almost surely, 2^12020445430 is an apocalyptic number.

12020445430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12020445430 is an abundant number, since it is smaller than the sum of its proper divisors (12712994570).

12020445430 is a wasteful number, since it uses less digits than its factorization.

12020445430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39364.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 12020445430 its reverse (3454402021), we get a palindrome (15474847451).

The spelling of 12020445430 in words is "twelve billion, twenty million, four hundred forty-five thousand, four hundred thirty".