12021012219 has 4 divisors (see below), whose sum is σ = 16028016296. Its totient is φ = 8014008144.

The previous prime is 12021012193. The next prime is 12021012253. The reversal of 12021012219 is 91221012021.

12021012219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12021012219 - 2¹¹ = 12021010171 is a prime.

It is a super-2 number, since 2×12021012219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12021012195 and 12021012204.

It is not an unprimeable number, because it can be changed into a prime (12021012019) 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 3 ways as a sum of consecutive naturals, for example, 2003502034 + ... + 2003502039.

It is an arithmetic number, because the mean of its divisors is an integer number (4007004074).

Almost surely, 2^12021012219 is an apocalyptic number.

12021012219 is a deficient number, since it is larger than the sum of its proper divisors (4007004077).

12021012219 is an equidigital number, since it uses as much as digits as its factorization.

12021012219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007004076.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 12021012219 in words is "twelve billion, twenty-one million, twelve thousand, two hundred nineteen".