13220422 has 8 divisors (see below), whose sum is σ = 19857096. Its totient is φ = 6601392.

The previous prime is 13220419. The next prime is 13220437. The reversal of 13220422 is 22402231.

13220422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 13220396 and 13220405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2343 + ... + 5650.

It is an arithmetic number, because the mean of its divisors is an integer number (2482137).

Almost surely, 2^13220422 is an apocalyptic number.

13220422 is a deficient number, since it is larger than the sum of its proper divisors (6636674).

13220422 is an equidigital number, since it uses as much as digits as its factorization.

13220422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8822.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 13220422 is about 3635.9898239682. The cubic root of 13220422 is about 236.4549659703.

Adding to 13220422 its reverse (22402231), we get a palindrome (35622653).

The spelling of 13220422 in words is "thirteen million, two hundred twenty thousand, four hundred twenty-two".