12219312919 has 4 divisors (see below), whose sum is σ = 13330159560. Its totient is φ = 11108466280.

The previous prime is 12219312877. The next prime is 12219312947. The reversal of 12219312919 is 91921391221.

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 12219312919 - 2¹¹ = 12219310871 is a prime.

It is a super-2 number, since 2×12219312919² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12219310919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555423304 + ... + 555423325.

It is an arithmetic number, because the mean of its divisors is an integer number (3332539890).

Almost surely, 2^12219312919 is an apocalyptic number.

12219312919 is a deficient number, since it is larger than the sum of its proper divisors (1110846641).

12219312919 is a wasteful number, since it uses less digits than its factorization.

12219312919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110846640.

The product of its digits is 17496, while the sum is 40.

The spelling of 12219312919 in words is "twelve billion, two hundred nineteen million, three hundred twelve thousand, nine hundred nineteen".