34444031221 has 4 divisors (see below), whose sum is σ = 34525846444. Its totient is φ = 34362216000.

The previous prime is 34444031173. The next prime is 34444031227. The reversal of 34444031221 is 12213044443.

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 1460386225 + 32983644996 = 38215^2 + 181614^2 .

It is a cyclic number.

It is not a de Polignac number, because 34444031221 - 2⁷ = 34444031093 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 34444031221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34444031227) 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, 40906980 + ... + 40907821.

It is an arithmetic number, because the mean of its divisors is an integer number (8631461611).

Almost surely, 2^34444031221 is an apocalyptic number.

It is an amenable number.

34444031221 is a deficient number, since it is larger than the sum of its proper divisors (81815223).

34444031221 is an equidigital number, since it uses as much as digits as its factorization.

34444031221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81815222.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 34444031221 its reverse (12213044443), we get a palindrome (46657075664).

The spelling of 34444031221 in words is "thirty-four billion, four hundred forty-four million, thirty-one thousand, two hundred twenty-one".