22212213 has 8 divisors (see below), whose sum is σ = 30571776. Its totient is φ = 14330400.

The previous prime is 22212199. The next prime is 22212233. The reversal of 22212213 is 31221222.

It is a happy number.

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

It is not a de Polignac number, because 22212213 - 2⁸ = 22211957 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22212192 and 22212201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119328 + ... + 119513.

It is an arithmetic number, because the mean of its divisors is an integer number (3821472).

Almost surely, 2^22212213 is an apocalyptic number.

It is an amenable number.

22212213 is a deficient number, since it is larger than the sum of its proper divisors (8359563).

22212213 is a wasteful number, since it uses less digits than its factorization.

22212213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238875.

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

The square root of 22212213 is about 4712.9834500028. The cubic root of 22212213 is about 281.1020049034.

Adding to 22212213 its reverse (31221222), we get a palindrome (53433435).

Subtracting 22212213 from its reverse (31221222), we obtain a palindrome (9009009).

The spelling of 22212213 in words is "twenty-two million, two hundred twelve thousand, two hundred thirteen".