12001000219 has 4 divisors (see below), whose sum is σ = 12924154096. Its totient is φ = 11077846344.

The previous prime is 12001000217. The next prime is 12001000223. The reversal of 12001000219 is 91200010021.

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 12001000219 - 2¹ = 12001000217 is a prime.

It is a super-2 number, since 2×12001000219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001000217) 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, 461576919 + ... + 461576944.

It is an arithmetic number, because the mean of its divisors is an integer number (3231038524).

Almost surely, 2^12001000219 is an apocalyptic number.

12001000219 is a deficient number, since it is larger than the sum of its proper divisors (923153877).

12001000219 is an equidigital number, since it uses as much as digits as its factorization.

12001000219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923153876.

The product of its (nonzero) digits is 36, while the sum is 16.

It can be divided in two parts, 120010002 and 19, that added together give a palindrome (120010021).

The spelling of 12001000219 in words is "twelve billion, one million, two hundred nineteen", and thus it is an aban number.