221344213013 has 24 divisors (see below), whose sum is σ = 283101318144. Its totient is φ = 171117878400.

The previous prime is 221344213009. The next prime is 221344213033. The reversal of 221344213013 is 310312443122.

It is not a de Polignac number, because 221344213013 - 2² = 221344213009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221344213033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1548308 + ... + 1685213.

It is an arithmetic number, because the mean of its divisors is an integer number (11795888256).

Almost surely, 2^221344213013 is an apocalyptic number.

It is an amenable number.

221344213013 is a deficient number, since it is larger than the sum of its proper divisors (61757105131).

221344213013 is a wasteful number, since it uses less digits than its factorization.

221344213013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233673 (or 3233666 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 221344213013 its reverse (310312443122), we get a palindrome (531656656135).

The spelling of 221344213013 in words is "two hundred twenty-one billion, three hundred forty-four million, two hundred thirteen thousand, thirteen".