13224501217 has 4 divisors (see below), whose sum is σ = 13234134420. Its totient is φ = 13214868016.

The previous prime is 13224501211. The next prime is 13224501233. The reversal of 13224501217 is 71210542231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71210542231 = 29 ⋅2455535939.

It can be written as a sum of positive squares in 2 ways, for example, as 13054433536 + 170067681 = 114256^2 + 13041^2 .

It is a cyclic number.

It is not a de Polignac number, because 13224501217 - 2⁷ = 13224501089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13224501211) 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, 4814542 + ... + 4817287.

It is an arithmetic number, because the mean of its divisors is an integer number (3308533605).

Almost surely, 2^13224501217 is an apocalyptic number.

It is an amenable number.

13224501217 is a deficient number, since it is larger than the sum of its proper divisors (9633203).

13224501217 is an equidigital number, since it uses as much as digits as its factorization.

13224501217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9633202.

The product of its (nonzero) digits is 3360, while the sum is 28.

The spelling of 13224501217 in words is "thirteen billion, two hundred twenty-four million, five hundred one thousand, two hundred seventeen".