12120484217 has 4 divisors (see below), whose sum is σ = 12121188240. Its totient is φ = 12119780196.

The previous prime is 12120484213. The next prime is 12120484219. The reversal of 12120484217 is 71248402121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12120484217 - 2² = 12120484213 is a prime.

It is a super-2 number, since 2×12120484217² (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 (12120484213) 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, 325523 + ... + 360840.

It is an arithmetic number, because the mean of its divisors is an integer number (3030297060).

Almost surely, 2^12120484217 is an apocalyptic number.

It is an amenable number.

12120484217 is a deficient number, since it is larger than the sum of its proper divisors (704023).

12120484217 is an equidigital number, since it uses as much as digits as its factorization.

12120484217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704022.

The product of its (nonzero) digits is 7168, while the sum is 32.

Adding to 12120484217 its reverse (71248402121), we get a palindrome (83368886338).

The spelling of 12120484217 in words is "twelve billion, one hundred twenty million, four hundred eighty-four thousand, two hundred seventeen".