12123011219 has 16 divisors (see below), whose sum is σ = 14036561280. Its totient is φ = 10347807360.

The previous prime is 12123011213. The next prime is 12123011267. The reversal of 12123011219 is 91211032121.

12123011219 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 12123011219 - 2¹⁶ = 12122945683 is a prime.

It is a super-2 number, since 2×12123011219² (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 = 12123011194 and 12123011203.

It is not an unprimeable number, because it can be changed into a prime (12123011213) 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, 992 + ... + 155714.

It is an arithmetic number, because the mean of its divisors is an integer number (877285080).

Almost surely, 2^12123011219 is an apocalyptic number.

12123011219 is a deficient number, since it is larger than the sum of its proper divisors (1913550061).

12123011219 is a wasteful number, since it uses less digits than its factorization.

12123011219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155170.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 12123011219 in words is "twelve billion, one hundred twenty-three million, eleven thousand, two hundred nineteen".