212243433 has 32 divisors (see below), whose sum is σ = 308365440. Its totient is φ = 129392640.

The previous prime is 212243413. The next prime is 212243459. The reversal of 212243433 is 334342212.

It is not a de Polignac number, because 212243433 - 2⁵ = 212243401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212243413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 330793 + ... + 331433.

It is an arithmetic number, because the mean of its divisors is an integer number (9636420).

Almost surely, 2^212243433 is an apocalyptic number.

It is an amenable number.

212243433 is a deficient number, since it is larger than the sum of its proper divisors (96122007).

212243433 is a wasteful number, since it uses less digits than its factorization.

212243433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857.

The product of its digits is 3456, while the sum is 24.

The square root of 212243433 is about 14568.5769037336. The cubic root of 212243433 is about 596.5013357904.

Adding to 212243433 its reverse (334342212), we get a palindrome (546585645).

The spelling of 212243433 in words is "two hundred twelve million, two hundred forty-three thousand, four hundred thirty-three".