12001221211219 has 4 divisors (see below), whose sum is σ = 12012861582000. Its totient is φ = 11989580840440.

The previous prime is 12001221211159. The next prime is 12001221211241. The reversal of 12001221211219 is 91211212210021.

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

It is a cyclic number.

It is not a de Polignac number, because 12001221211219 - 2²⁷ = 12001086993491 is a prime.

It is a super-2 number, since 2×12001221211219² (a number of 27 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 = 12001221211193 and 12001221211202.

It is not an unprimeable number, because it can be changed into a prime (12001221211319) 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, 5820183844 + ... + 5820185905.

It is an arithmetic number, because the mean of its divisors is an integer number (3003215395500).

Almost surely, 2^{12001221211219} is an apocalyptic number.

12001221211219 is a deficient number, since it is larger than the sum of its proper divisors (11640370781).

12001221211219 is a wasteful number, since it uses less digits than its factorization.

12001221211219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11640370780.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 12001221211219 in words is "twelve trillion, one billion, two hundred twenty-one million, two hundred eleven thousand, two hundred nineteen".