12224122217 has 8 divisors (see below), whose sum is σ = 12397470120. Its totient is φ = 12050933760.

The previous prime is 12224122171. The next prime is 12224122241. The reversal of 12224122217 is 71222142221.

It can be written as a sum of positive squares in 4 ways, for example, as 297079696 + 11927042521 = 17236^2 + 109211^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12224122217 - 2¹⁸ = 12223860073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12224122277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119009 + ... + 196497.

It is an arithmetic number, because the mean of its divisors is an integer number (1549683765).

Almost surely, 2^12224122217 is an apocalyptic number.

It is an amenable number.

12224122217 is a deficient number, since it is larger than the sum of its proper divisors (173347903).

12224122217 is an equidigital number, since it uses as much as digits as its factorization.

12224122217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79723.

The product of its digits is 1792, while the sum is 26.

Adding to 12224122217 its reverse (71222142221), we get a palindrome (83446264438).

The spelling of 12224122217 in words is "twelve billion, two hundred twenty-four million, one hundred twenty-two thousand, two hundred seventeen".