13226217 has 4 divisors (see below), whose sum is σ = 17634960. Its totient is φ = 8817476.

The previous prime is 13226197. The next prime is 13226237. The reversal of 13226217 is 71262231.

13226217 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 71262231 = 3 ⋅23754077.

It is an interprime number because it is at equal distance from previous prime (13226197) and next prime (13226237).

It is a cyclic number.

It is not a de Polignac number, because 13226217 - 2¹⁰ = 13225193 is a prime.

It is a super-2 number, since 2×13226217² = 349865632262178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13226237) 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, 2204367 + ... + 2204372.

It is an arithmetic number, because the mean of its divisors is an integer number (4408740).

Almost surely, 2^13226217 is an apocalyptic number.

It is an amenable number.

13226217 is a deficient number, since it is larger than the sum of its proper divisors (4408743).

13226217 is an equidigital number, since it uses as much as digits as its factorization.

13226217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4408742.

The product of its digits is 1008, while the sum is 24.

The square root of 13226217 is about 3636.7866310797. The cubic root of 13226217 is about 236.4895099096.

Adding to 13226217 its reverse (71262231), we get a palindrome (84488448).

The spelling of 13226217 in words is "thirteen million, two hundred twenty-six thousand, two hundred seventeen".