212240310433 has 4 divisors (see below), whose sum is σ = 213192060928. Its totient is φ = 211288559940.

The previous prime is 212240310391. The next prime is 212240310473. The reversal of 212240310433 is 334013042212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212240310433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212240310398 and 212240310407.

It is not an unprimeable number, because it can be changed into a prime (212240310473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475874913 + ... + 475875358.

It is an arithmetic number, because the mean of its divisors is an integer number (53298015232).

Almost surely, 2^212240310433 is an apocalyptic number.

It is an amenable number.

212240310433 is a deficient number, since it is larger than the sum of its proper divisors (951750495).

212240310433 is an equidigital number, since it uses as much as digits as its factorization.

212240310433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951750494.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 212240310433 its reverse (334013042212), we get a palindrome (546253352645).

The spelling of 212240310433 in words is "two hundred twelve billion, two hundred forty million, three hundred ten thousand, four hundred thirty-three".