213222430 has 16 divisors (see below), whose sum is σ = 383978304. Its totient is φ = 85249440.

The previous prime is 213222407. The next prime is 213222437. The reversal of 213222430 is 34222312.

It is a junction number, because it is equal to n+sod(n) for n = 213222398 and 213222407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213222437) 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 7 ways as a sum of consecutive naturals, for example, 28459 + ... + 35161.

It is an arithmetic number, because the mean of its divisors is an integer number (23998644).

Almost surely, 2^213222430 is an apocalyptic number.

213222430 is a deficient number, since it is larger than the sum of its proper divisors (170755874).

213222430 is a wasteful number, since it uses less digits than its factorization.

213222430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9891.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 213222430 is about 14602.1378571769. The cubic root of 213222430 is about 597.4170726924.

Adding to 213222430 its reverse (34222312), we get a palindrome (247444742).

The spelling of 213222430 in words is "two hundred thirteen million, two hundred twenty-two thousand, four hundred thirty".