212434444441 has 4 divisors (see below), whose sum is σ = 212441397300. Its totient is φ = 212427491584.

The previous prime is 212434444399. The next prime is 212434444463. The reversal of 212434444441 is 144444434212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 162970460416 + 49463984025 = 403696^2 + 222405^2 .

It is a cyclic number.

It is not a de Polignac number, because 212434444441 - 2⁹ = 212434443929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212434444441.

It is not an unprimeable number, because it can be changed into a prime (212434414441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3430396 + ... + 3491773.

It is an arithmetic number, because the mean of its divisors is an integer number (53110349325).

Almost surely, 2^212434444441 is an apocalyptic number.

It is an amenable number.

212434444441 is a deficient number, since it is larger than the sum of its proper divisors (6952859).

212434444441 is an equidigital number, since it uses as much as digits as its factorization.

212434444441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6952858.

The product of its digits is 196608, while the sum is 37.

Adding to 212434444441 its reverse (144444434212), we get a palindrome (356878878653).

The spelling of 212434444441 in words is "two hundred twelve billion, four hundred thirty-four million, four hundred forty-four thousand, four hundred forty-one".