212211433441 has 16 divisors (see below), whose sum is σ = 251048263680. Its totient is φ = 175537524240.

The previous prime is 212211433397. The next prime is 212211433457. The reversal of 212211433441 is 144334112212.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212211433441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212214433441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1284121 + ... + 1439926.

It is an arithmetic number, because the mean of its divisors is an integer number (15690516480).

Almost surely, 2^212211433441 is an apocalyptic number.

It is an amenable number.

212211433441 is a deficient number, since it is larger than the sum of its proper divisors (38836830239).

212211433441 is a wasteful number, since it uses less digits than its factorization.

212211433441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2724444.

The product of its digits is 4608, while the sum is 28.

Adding to 212211433441 its reverse (144334112212), we get a palindrome (356545545653).

The spelling of 212211433441 in words is "two hundred twelve billion, two hundred eleven million, four hundred thirty-three thousand, four hundred forty-one".