12000222021 has 16 divisors (see below), whose sum is σ = 16986936384. Its totient is φ = 7509352704.

The previous prime is 12000221983. The next prime is 12000222037. The reversal of 12000222021 is 12022200021.

12000222021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12000222021 - 2⁹ = 12000221509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12000221988 and 12000222006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000222061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296391 + ... + 334436.

It is an arithmetic number, because the mean of its divisors is an integer number (1061683524).

Almost surely, 2^12000222021 is an apocalyptic number.

It is an amenable number.

12000222021 is a deficient number, since it is larger than the sum of its proper divisors (4986714363).

12000222021 is a wasteful number, since it uses less digits than its factorization.

12000222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631220.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 12000222021 its reverse (12022200021), we get a palindrome (24022422042).

The spelling of 12000222021 in words is "twelve billion, two hundred twenty-two thousand, twenty-one".