12428221600438 has 32 divisors (see below), whose sum is σ = 21335133496320. Its totient is φ = 5318978832000.

The previous prime is 12428221600427. The next prime is 12428221600453. The reversal of 12428221600438 is 83400612282421.

It is a junction number, because it is equal to n+sod(n) for n = 12428221600394 and 12428221600403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355450345 + ... + 355485307.

It is an arithmetic number, because the mean of its divisors is an integer number (666722921760).

Almost surely, 2^{12428221600438} is an apocalyptic number.

12428221600438 is a deficient number, since it is larger than the sum of its proper divisors (8906911895882).

12428221600438 is a wasteful number, since it uses less digits than its factorization.

12428221600438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69532.

The product of its (nonzero) digits is 294912, while the sum is 43.

Adding to 12428221600438 its reverse (83400612282421), we get a palindrome (95828833882859).

The spelling of 12428221600438 in words is "twelve trillion, four hundred twenty-eight billion, two hundred twenty-one million, six hundred thousand, four hundred thirty-eight".