12020221219 has 4 divisors (see below), whose sum is σ = 12058871760. Its totient is φ = 11981570680.

The previous prime is 12020221211. The next prime is 12020221259. The reversal of 12020221219 is 91212202021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91212202021 = 71129 ⋅1282349.

It is a cyclic number.

It is not a de Polignac number, because 12020221219 - 2³ = 12020221211 is a prime.

It is a super-2 number, since 2×12020221219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12020221219.

It is not an unprimeable number, because it can be changed into a prime (12020221211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19324804 + ... + 19325425.

It is an arithmetic number, because the mean of its divisors is an integer number (3014717940).

Almost surely, 2^12020221219 is an apocalyptic number.

12020221219 is a deficient number, since it is larger than the sum of its proper divisors (38650541).

12020221219 is an equidigital number, since it uses as much as digits as its factorization.

12020221219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38650540.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 12020221219 in words is "twelve billion, twenty million, two hundred twenty-one thousand, two hundred nineteen".