434343521221 has 4 divisors (see below), whose sum is σ = 434346193600. Its totient is φ = 434340848844.

The previous prime is 434343521081. The next prime is 434343521231. The reversal of 434343521221 is 122125343434.

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 not a de Polignac number, because 434343521221 - 2¹³ = 434343513029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434343521231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1075431 + ... + 1423108.

It is an arithmetic number, because the mean of its divisors is an integer number (108586548400).

Almost surely, 2^434343521221 is an apocalyptic number.

It is an amenable number.

434343521221 is a deficient number, since it is larger than the sum of its proper divisors (2672379).

434343521221 is a wasteful number, since it uses less digits than its factorization.

434343521221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2672378.

The product of its digits is 69120, while the sum is 34.

Adding to 434343521221 its reverse (122125343434), we get a palindrome (556468864655).

The spelling of 434343521221 in words is "four hundred thirty-four billion, three hundred forty-three million, five hundred twenty-one thousand, two hundred twenty-one".