213220450 has 12 divisors (see below), whose sum is σ = 396590130. Its totient is φ = 85288160.

The previous prime is 213220433. The next prime is 213220457. The reversal of 213220450 is 54022312.

It can be written as a sum of positive squares in 3 ways, for example, as 127306089 + 85914361 = 11283^2 + 9269^2 .

It is not an unprimeable number, because it can be changed into a prime (213220457) 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, 2132155 + ... + 2132254.

Almost surely, 2^213220450 is an apocalyptic number.

213220450 is a deficient number, since it is larger than the sum of its proper divisors (183369680).

213220450 is a wasteful number, since it uses less digits than its factorization.

213220450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4264421 (or 4264416 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 213220450 is about 14602.0700587280. The cubic root of 213220450 is about 597.4152234663.

Adding to 213220450 its reverse (54022312), we get a palindrome (267242762).

The spelling of 213220450 in words is "two hundred thirteen million, two hundred twenty thousand, four hundred fifty".