13222222 has 12 divisors (see below), whose sum is σ = 21476880. Its totient is φ = 6102408.

The previous prime is 13222207. The next prime is 13222229. The reversal of 13222222 is 22222231.

13222222 is a modest number, since divided by 2222 gives 1322 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 13222196 and 13222205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13222229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19222 + ... + 19897.

It is an arithmetic number, because the mean of its divisors is an integer number (1789740).

Almost surely, 2^13222222 is an apocalyptic number.

13222222 is a deficient number, since it is larger than the sum of its proper divisors (8254658).

13222222 is a wasteful number, since it uses less digits than its factorization.

13222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39147 (or 39134 counting only the distinct ones).

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

The square root of 13222222 is about 3636.2373409886. The cubic root of 13222222 is about 236.4656968336.

Adding to 13222222 its reverse (22222231), we get a palindrome (35444453).

Subtracting 13222222 from its reverse (22222231), we obtain a palindrome (9000009).

It can be divided in two parts, 1 and 3222222, that added together give a palindrome (3222223).

The spelling of 13222222 in words is "thirteen million, two hundred twenty-two thousand, two hundred twenty-two".