13247222 has 4 divisors (see below), whose sum is σ = 19870836. Its totient is φ = 6623610.

The previous prime is 13247207. The next prime is 13247239. The reversal of 13247222 is 22274231.

It is a happy number.

13247222 is digitally balanced in base 2, because in such base 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 an emirpimes, since its reverse is a distinct semiprime: 22274231 = 7 ⋅3182033.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3311804 + ... + 3311807.

It is an arithmetic number, because the mean of its divisors is an integer number (4967709).

Almost surely, 2^13247222 is an apocalyptic number.

13247222 is a deficient number, since it is larger than the sum of its proper divisors (6623614).

13247222 is an equidigital number, since it uses as much as digits as its factorization.

13247222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6623613.

The product of its digits is 1344, while the sum is 23.

The square root of 13247222 is about 3639.6733369906. The cubic root of 13247222 is about 236.6146360085.

The spelling of 13247222 in words is "thirteen million, two hundred forty-seven thousand, two hundred twenty-two".