213222213 has 20 divisors (see below), whose sum is σ = 332368608. Its totient is φ = 135966600.

The previous prime is 213222197. The next prime is 213222223. The reversal of 213222213 is 312222312.

It is not a de Polignac number, because 213222213 - 2⁴ = 213222197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213222223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 55363 + ... + 59088.

Almost surely, 2^213222213 is an apocalyptic number.

213222213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

213222213 is a deficient number, since it is larger than the sum of its proper divisors (119146395).

213222213 is a wasteful number, since it uses less digits than its factorization.

213222213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114486 (or 114477 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 213222213 is about 14602.1304267562. The cubic root of 213222213 is about 597.4168700252.

Adding to 213222213 its reverse (312222312), we get a palindrome (525444525).

Subtracting 213222213 from its reverse (312222312), we obtain a palindrome (99000099).

The spelling of 213222213 in words is "two hundred thirteen million, two hundred twenty-two thousand, two hundred thirteen".