213043222 has 32 divisors (see below), whose sum is σ = 390021120. Its totient is φ = 85307040.

The previous prime is 213043213. The next prime is 213043223. The reversal of 213043222 is 222340312.

It is a self number, because there is not a number n which added to its sum of digits gives 213043222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213043223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4123 + ... + 21049.

It is an arithmetic number, because the mean of its divisors is an integer number (12188160).

Almost surely, 2^213043222 is an apocalyptic number.

213043222 is a deficient number, since it is larger than the sum of its proper divisors (176977898).

213043222 is a wasteful number, since it uses less digits than its factorization.

213043222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16996.

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

The square root of 213043222 is about 14596.0002055358. Note that the first 3 decimals coincide. The cubic root of 213043222 is about 597.2496545225.

Adding to 213043222 its reverse (222340312), we get a palindrome (435383534).

The spelling of 213043222 in words is "two hundred thirteen million, forty-three thousand, two hundred twenty-two".