12021422847 has 64 divisors (see below), whose sum is σ = 18968463360. Its totient is φ = 6630833664.

The previous prime is 12021422827. The next prime is 12021422869. The reversal of 12021422847 is 74822412021.

It is not a de Polignac number, because 12021422847 - 2⁶ = 12021422783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021422827) 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 63 ways as a sum of consecutive naturals, for example, 23899198 + ... + 23899700.

It is an arithmetic number, because the mean of its divisors is an integer number (296382240).

Almost surely, 2^12021422847 is an apocalyptic number.

12021422847 is a deficient number, since it is larger than the sum of its proper divisors (6947040513).

12021422847 is a wasteful number, since it uses less digits than its factorization.

12021422847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872.

The product of its (nonzero) digits is 14336, while the sum is 33.

Adding to 12021422847 its reverse (74822412021), we get a palindrome (86843834868).

The spelling of 12021422847 in words is "twelve billion, twenty-one million, four hundred twenty-two thousand, eight hundred forty-seven".