212243450 has 48 divisors (see below), whose sum is σ = 403099200. Its totient is φ = 83128320.

The previous prime is 212243413. The next prime is 212243459. The reversal of 212243450 is 54342212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (212243459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 825722 + ... + 825978.

It is an arithmetic number, because the mean of its divisors is an integer number (8397900).

Almost surely, 2^212243450 is an apocalyptic number.

212243450 is a deficient number, since it is larger than the sum of its proper divisors (190855750).

212243450 is a wasteful number, since it uses less digits than its factorization.

212243450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 212243450 is about 14568.5774871811. The cubic root of 212243450 is about 596.5013517164.

Adding to 212243450 its reverse (54342212), we get a palindrome (266585662).

The spelling of 212243450 in words is "two hundred twelve million, two hundred forty-three thousand, four hundred fifty".