12184213217 has 6 divisors (see below), whose sum is σ = 13392565074. Its totient is φ = 11076557360.

The previous prime is 12184213211. The next prime is 12184213219. The reversal of 12184213217 is 71231248121.

It can be written as a sum of positive squares in only one way, i.e., 11406026401 + 778186816 = 106799^2 + 27896^2 .

It is not a de Polignac number, because 12184213217 - 2¹⁶ = 12184147681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12184213211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50347868 + ... + 50348109.

It is an arithmetic number, because the mean of its divisors is an integer number (2232094179).

Almost surely, 2^12184213217 is an apocalyptic number.

It is an amenable number.

12184213217 is a deficient number, since it is larger than the sum of its proper divisors (1208351857).

12184213217 is a wasteful number, since it uses less digits than its factorization.

12184213217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100695999 (or 100695988 counting only the distinct ones).

The product of its digits is 5376, while the sum is 32.

The spelling of 12184213217 in words is "twelve billion, one hundred eighty-four million, two hundred thirteen thousand, two hundred seventeen".