13222643 has 8 divisors (see below), whose sum is σ = 15155712. Its totient is φ = 11300616.

The previous prime is 13222639. The next prime is 13222661. The reversal of 13222643 is 34622231.

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 13222643 - 2² = 13222639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13222603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5 + ... + 5142.

It is an arithmetic number, because the mean of its divisors is an integer number (1894464).

Almost surely, 2^13222643 is an apocalyptic number.

13222643 is a deficient number, since it is larger than the sum of its proper divisors (1933069).

13222643 is an equidigital number, since it uses as much as digits as its factorization.

13222643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5521.

The product of its digits is 1728, while the sum is 23.

The square root of 13222643 is about 3636.2952300384. The cubic root of 13222643 is about 236.4682065228.

Adding to 13222643 its reverse (34622231), we get a palindrome (47844874).

It can be divided in two parts, 1322 and 2643, that multiplied together give a triangular number (3494046 = T₂₆₄₃).

The spelling of 13222643 in words is "thirteen million, two hundred twenty-two thousand, six hundred forty-three".