212204530 has 16 divisors (see below), whose sum is σ = 390096000. Its totient is φ = 83075632.

The previous prime is 212204501. The next prime is 212204537. The reversal of 212204530 is 35402212.

It is a junction number, because it is equal to n+sod(n) for n = 212204498 and 212204507.

It is not an unprimeable number, because it can be changed into a prime (212204537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225280 + ... + 226219.

It is an arithmetic number, because the mean of its divisors is an integer number (24381000).

Almost surely, 2^212204530 is an apocalyptic number.

212204530 is a deficient number, since it is larger than the sum of its proper divisors (177891470).

212204530 is a wasteful number, since it uses less digits than its factorization.

212204530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451553.

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

The square root of 212204530 is about 14567.2416743871. The cubic root of 212204530 is about 596.4648884760.

Adding to 212204530 its reverse (35402212), we get a palindrome (247606742).

The spelling of 212204530 in words is "two hundred twelve million, two hundred four thousand, five hundred thirty".