13222212 has 12 divisors (see below), whose sum is σ = 30851856. Its totient is φ = 4407400.

The previous prime is 13222207. The next prime is 13222229. The reversal of 13222212 is 21222231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 13222191 and 13222200.

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, 550914 + ... + 550937.

It is an arithmetic number, because the mean of its divisors is an integer number (2570988).

Almost surely, 2^13222212 is an apocalyptic number.

13222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13222212 is an abundant number, since it is smaller than the sum of its proper divisors (17629644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13222212 is a wasteful number, since it uses less digits than its factorization.

13222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101858 (or 1101856 counting only the distinct ones).

The product of its digits is 96, while the sum is 15.

The square root of 13222212 is about 3636.2359659406. The cubic root of 13222212 is about 236.4656372204.

Adding to 13222212 its reverse (21222231), we get a palindrome (34444443).

The spelling of 13222212 in words is "thirteen million, two hundred twenty-two thousand, two hundred twelve".