213322224 has 20 divisors (see below), whose sum is σ = 551082536. Its totient is φ = 71107392.

The previous prime is 213322223. The next prime is 213322247. The reversal of 213322224 is 422223312.

213322224 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 213322224.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2222059 + ... + 2222154.

Almost surely, 2^213322224 is an apocalyptic number.

213322224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213322224 is an abundant number, since it is smaller than the sum of its proper divisors (337760312).

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

213322224 is a wasteful number, since it uses less digits than its factorization.

213322224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4444224 (or 4444218 counting only the distinct ones).

The product of its digits is 1152, while the sum is 21.

The square root of 213322224 is about 14605.5545598241. The cubic root of 213322224 is about 597.5102607319.

Adding to 213322224 its reverse (422223312), we get a palindrome (635545536).

The spelling of 213322224 in words is "two hundred thirteen million, three hundred twenty-two thousand, two hundred twenty-four".