213322225 has 6 divisors (see below), whose sum is σ = 264519590. Its totient is φ = 170657760.

The previous prime is 213322223. The next prime is 213322247. The reversal of 213322225 is 522223312.

It can be written as a sum of positive squares in 3 ways, for example, as 27081616 + 186240609 = 5204^2 + 13647^2 .

It is not a de Polignac number, because 213322225 - 2¹ = 213322223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213322196 and 213322205.

It is not an unprimeable number, because it can be changed into a prime (213322223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4266420 + ... + 4266469.

Almost surely, 2^213322225 is an apocalyptic number.

213322225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213322225 is a deficient number, since it is larger than the sum of its proper divisors (51197365).

213322225 is an equidigital number, since it uses as much as digits as its factorization.

213322225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8532899 (or 8532894 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The square root of 213322225 is about 14605.5545940577. The cubic root of 213322225 is about 597.5102616656.

Adding to 213322225 its reverse (522223312), we get a palindrome (735545537).

The spelling of 213322225 in words is "two hundred thirteen million, three hundred twenty-two thousand, two hundred twenty-five".