1344344252221 has 4 divisors (see below), whose sum is σ = 1345380756412. Its totient is φ = 1343307748032.

The previous prime is 1344344252219. The next prime is 1344344252261. The reversal of 1344344252221 is 1222524434431.

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 723579903225 + 620764348996 = 850635^2 + 787886^2 .

It is a cyclic number.

It is not a de Polignac number, because 1344344252221 - 2¹ = 1344344252219 is a prime.

It is a super-2 number, since 2×1344344252221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344344252201) 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, 518250150 + ... + 518252743.

It is an arithmetic number, because the mean of its divisors is an integer number (336345189103).

Almost surely, 2^{1344344252221} is an apocalyptic number.

It is an amenable number.

1344344252221 is a deficient number, since it is larger than the sum of its proper divisors (1036504191).

1344344252221 is a wasteful number, since it uses less digits than its factorization.

1344344252221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036504190.

The product of its digits is 184320, while the sum is 37.

Adding to 1344344252221 its reverse (1222524434431), we get a palindrome (2566868686652).

The spelling of 1344344252221 in words is "one trillion, three hundred forty-four billion, three hundred forty-four million, two hundred fifty-two thousand, two hundred twenty-one".