344243201221 has 4 divisors (see below), whose sum is σ = 344254424332. Its totient is φ = 344231978112.

The previous prime is 344243201219. The next prime is 344243201251. The reversal of 344243201221 is 122102342443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122102342443 = 91297 ⋅1337419.

It can be written as a sum of positive squares in 2 ways, for example, as 116369676900 + 227873524321 = 341130^2 + 477361^2 .

It is a cyclic number.

It is not a de Polignac number, because 344243201221 - 2¹ = 344243201219 is a prime.

It is a super-3 number, since 3×344243201221³ (a number of 36 digits) contains 333 as substring.

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 344243201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344243201201) 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, 5565420 + ... + 5626933.

It is an arithmetic number, because the mean of its divisors is an integer number (86063606083).

Almost surely, 2^344243201221 is an apocalyptic number.

It is an amenable number.

344243201221 is a deficient number, since it is larger than the sum of its proper divisors (11223111).

344243201221 is a wasteful number, since it uses less digits than its factorization.

344243201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11223110.

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

Adding to 344243201221 its reverse (122102342443), we get a palindrome (466345543664).

The spelling of 344243201221 in words is "three hundred forty-four billion, two hundred forty-three million, two hundred one thousand, two hundred twenty-one".