1344403402221 has 16 divisors (see below), whose sum is σ = 1970423313408. Its totient is φ = 808570167600.

The previous prime is 1344403402217. The next prime is 1344403402231. The reversal of 1344403402221 is 1222043044431.

It is not a de Polignac number, because 1344403402221 - 2² = 1344403402217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344403402231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155489941 + ... + 155498586.

It is an arithmetic number, because the mean of its divisors is an integer number (123151457088).

Almost surely, 2^{1344403402221} is an apocalyptic number.

1344403402221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1344403402221 is a deficient number, since it is larger than the sum of its proper divisors (626019911187).

1344403402221 is a wasteful number, since it uses less digits than its factorization.

1344403402221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310988672.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 1344403402221 its reverse (1222043044431), we get a palindrome (2566446446652).

The spelling of 1344403402221 in words is "one trillion, three hundred forty-four billion, four hundred three million, four hundred two thousand, two hundred twenty-one".