13221022 has 4 divisors (see below), whose sum is σ = 19831536. Its totient is φ = 6610510.

The previous prime is 13221011. The next prime is 13221029. The reversal of 13221022 is 22012231.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 13220993 and 13221011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3305254 + ... + 3305257.

It is an arithmetic number, because the mean of its divisors is an integer number (4957884).

Almost surely, 2^13221022 is an apocalyptic number.

13221022 is a deficient number, since it is larger than the sum of its proper divisors (6610514).

13221022 is an equidigital number, since it uses as much as digits as its factorization.

13221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6610513.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 13221022 is about 3636.0723315138. The cubic root of 13221022 is about 236.4585430330.

Adding to 13221022 its reverse (22012231), we get a palindrome (35233253).

The spelling of 13221022 in words is "thirteen million, two hundred twenty-one thousand, twenty-two".